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class="content"> <div id="mw-content-text" class="mw-body-content"><script>function mfTempOpenSection(id){var block=document.getElementById("mf-section-"+id);block.className+=" open-block";block.previousSibling.className+=" open-block";}</script><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><section class="mf-section-0" id="mf-section-0"> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">For other uses, see <a href="/wiki/Snow_(disambiguation)" class="mw-disambig" title="Snow (disambiguation)">Snow (disambiguation)</a>.</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"Snowfall" redirects here. For other uses, see <a href="/wiki/Snowfall_(disambiguation)" class="mw-disambig" title="Snowfall (disambiguation)">Snowfall (disambiguation)</a>.</div> <style data-mw-deduplicate="TemplateStyles:r1257001546">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style>Snow comprises individual <a href="/wiki/Ice" title="Ice">ice</a> crystals that grow while suspended in the <a href="/wiki/Atmosphere" title="Atmosphere">atmosphere</a>—usually within clouds—and then fall, accumulating on the ground where they undergo further changes.<a href="#cite_note-Hobbs-2">[2]</a> It consists of frozen crystalline water throughout its life cycle, starting when, under suitable conditions, the ice crystals form in the atmosphere, increase to millimeter size, precipitate and accumulate on surfaces, then metamorphose in place, and ultimately melt, slide or <a href="/wiki/Sublimation_(phase_transition)" title="Sublimation (phase transition)">sublimate</a> away. <table class="infobox" style="width:25em"><tbody><tr><th colspan="2" class="infobox-above" style="background:#ccc">Snow</th></tr><tr><td colspan="2" class="infobox-image"><a href="/wiki/File:CargoNet_Di_12_Euro_4000_L%C3%B8nsdal_-_Bolna.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/12/CargoNet_Di_12_Euro_4000_L%C3%B8nsdal_-_Bolna.jpg/300px-CargoNet_Di_12_Euro_4000_L%C3%B8nsdal_-_Bolna.jpg" decoding="async" width="300" height="185" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/12/CargoNet_Di_12_Euro_4000_L%C3%B8nsdal_-_Bolna.jpg/450px-CargoNet_Di_12_Euro_4000_L%C3%B8nsdal_-_Bolna.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/12/CargoNet_Di_12_Euro_4000_L%C3%B8nsdal_-_Bolna.jpg/600px-CargoNet_Di_12_Euro_4000_L%C3%B8nsdal_-_Bolna.jpg 2x" data-file-width="4469" data-file-height="2759"></a><div class="infobox-caption"><a href="/wiki/Norway" title="Norway">Norwegian</a> train plowing through drifted snow</div></td></tr><tr><th colspan="2" class="infobox-header" style="background:#ddd">Physical properties</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Density" title="Density">Density</a> <style data-mw-deduplicate="TemplateStyles:r886047488">.mw-parser-output .nobold{font-weight:normal}</style>(ρ)</th><td class="infobox-data">0.1–0.8 g/cm3</td></tr><tr><th colspan="2" class="infobox-header" style="background:#ddd">Mechanical properties</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Ultimate_tensile_strength" title="Ultimate tensile strength">Tensile strength</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886047488">(σt)</th><td class="infobox-data">1.5–3.5 kPa<a href="#cite_note-Snowenclyclopedia-1">[1]</a></td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Compressive_strength" title="Compressive strength">Compressive strength</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886047488">(σc)</th><td class="infobox-data">3–7 MPa<a href="#cite_note-Snowenclyclopedia-1">[1]</a></td></tr><tr><th colspan="2" class="infobox-header" style="background:#ddd">Thermal properties</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Melting_point" title="Melting point">Melting temperature</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886047488">(Tm)</th><td class="infobox-data">0 °C</td></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Thermal_conductivity" class="mw-redirect" title="Thermal conductivity">Thermal conductivity</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886047488">(k) For densities 0.1 to 0.5 g/cm3</th><td class="infobox-data">0.05–0.7 W/(K·m)</td></tr><tr><th colspan="2" class="infobox-header" style="background:#ddd">Electrical properties</th></tr><tr><th scope="row" class="infobox-label"><a href="/wiki/Dielectric_constant" class="mw-redirect" title="Dielectric constant">Dielectric constant</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r886047488">(εr) For dry snow density 0.1 to 0.9 g/cm3</th><td class="infobox-data">1–3.2</td></tr><tr><td colspan="2" class="infobox-below" style="text-align:left; border-top:#aaa 2px solid">The physical properties of snow vary considerably from event to event, sample to sample, and over time.</td></tr></tbody></table> <style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl 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data-mw-deduplicate="TemplateStyles:r1246091330">.mw-parser-output .sidebar{width:22em;float:right;clear:right;margin:0.5em 0 1em 1em;background:var(--background-color-neutral-subtle,#f8f9fa);border:1px solid var(--border-color-base,#a2a9b1);padding:0.2em;text-align:center;line-height:1.4em;font-size:88%;border-collapse:collapse;display:table}body.skin-minerva .mw-parser-output .sidebar{display:table!important;float:right!important;margin:0.5em 0 1em 1em!important}.mw-parser-output .sidebar-subgroup{width:100%;margin:0;border-spacing:0}.mw-parser-output .sidebar-left{float:left;clear:left;margin:0.5em 1em 1em 0}.mw-parser-output .sidebar-none{float:none;clear:both;margin:0.5em 1em 1em 0}.mw-parser-output .sidebar-outer-title{padding:0 0.4em 0.2em;font-size:125%;line-height:1.2em;font-weight:bold}.mw-parser-output .sidebar-top-image{padding:0.4em}.mw-parser-output .sidebar-top-caption,.mw-parser-output .sidebar-pretitle-with-top-image,.mw-parser-output .sidebar-caption{padding:0.2em 0.4em 0;line-height:1.2em}.mw-parser-output .sidebar-pretitle{padding:0.4em 0.4em 0;line-height:1.2em}.mw-parser-output .sidebar-title,.mw-parser-output .sidebar-title-with-pretitle{padding:0.2em 0.8em;font-size:145%;line-height:1.2em}.mw-parser-output .sidebar-title-with-pretitle{padding:0.1em 0.4em}.mw-parser-output .sidebar-image{padding:0.2em 0.4em 0.4em}.mw-parser-output .sidebar-heading{padding:0.1em 0.4em}.mw-parser-output .sidebar-content{padding:0 0.5em 0.4em}.mw-parser-output .sidebar-content-with-subgroup{padding:0.1em 0.4em 0.2em}.mw-parser-output .sidebar-above,.mw-parser-output .sidebar-below{padding:0.3em 0.8em;font-weight:bold}.mw-parser-output .sidebar-collapse .sidebar-above,.mw-parser-output .sidebar-collapse .sidebar-below{border-top:1px solid #aaa;border-bottom:1px solid #aaa}.mw-parser-output .sidebar-navbar{text-align:right;font-size:115%;padding:0 0.4em 0.4em}.mw-parser-output .sidebar-list-title{padding:0 0.4em;text-align:left;font-weight:bold;line-height:1.6em;font-size:105%}.mw-parser-output .sidebar-list-title-c{padding:0 0.4em;text-align:center;margin:0 3.3em}@media(max-width:640px){body.mediawiki .mw-parser-output .sidebar{width:100%!important;clear:both;float:none!important;margin-left:0!important;margin-right:0!important}}body.skin--responsive .mw-parser-output .sidebar a>img{max-width:none!important}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sidebar:not(.notheme) .sidebar-list-title,html.skin-theme-clientpref-night .mw-parser-output .sidebar:not(.notheme) .sidebar-title-with-pretitle{background:transparent!important}html.skin-theme-clientpref-night .mw-parser-output .sidebar:not(.notheme) .sidebar-title-with-pretitle a{color:var(--color-progressive)!important}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sidebar:not(.notheme) .sidebar-list-title,html.skin-theme-clientpref-os .mw-parser-output .sidebar:not(.notheme) .sidebar-title-with-pretitle{background:transparent!important}html.skin-theme-clientpref-os .mw-parser-output .sidebar:not(.notheme) .sidebar-title-with-pretitle a{color:var(--color-progressive)!important}}@media print{body.ns-0 .mw-parser-output .sidebar{display:none!important}}</style> <a href="/wiki/Snowstorm" class="mw-redirect" title="Snowstorm">Snowstorms</a> organize and develop by feeding on sources of atmospheric moisture and cold air. <a href="/wiki/Snowflake" title="Snowflake">Snowflakes</a> <a href="/wiki/Nucleation" title="Nucleation">nucleate</a> around particles in the atmosphere by attracting <a href="/wiki/Supercooling" title="Supercooling">supercooled</a> water droplets, which <a href="/wiki/Freezing" title="Freezing">freeze</a> in hexagonal-shaped crystals. Snowflakes take on a variety of shapes, basic among these are platelets, needles, columns and <a href="/wiki/Hard_rime" class="mw-redirect" title="Hard rime">rime</a>. As snow accumulates into a <a href="/wiki/Snowpack" title="Snowpack">snowpack</a>, it may blow into drifts. Over time, accumulated snow metamorphoses, by <a href="/wiki/Sintering" title="Sintering">sintering</a>, <a href="/wiki/Sublimation_(phase_transition)" title="Sublimation (phase transition)">sublimation</a> and <a href="/wiki/Freeze-thaw" class="mw-redirect" title="Freeze-thaw">freeze-thaw</a>. Where the climate is cold enough for year-to-year accumulation, a <a href="/wiki/Glacier" title="Glacier">glacier</a> may form. Otherwise, snow typically melts seasonally, causing runoff into streams and rivers and recharging <a href="/wiki/Groundwater" title="Groundwater">groundwater</a>. Major snow-prone areas include the <a href="/wiki/Polar_regions_of_Earth" title="Polar regions of Earth">polar regions</a>, the northernmost half of the <a href="/wiki/Northern_Hemisphere" title="Northern Hemisphere">Northern Hemisphere</a> and mountainous regions worldwide with sufficient moisture and cold temperatures. In the <a href="/wiki/Southern_Hemisphere" title="Southern Hemisphere">Southern Hemisphere</a>, snow is confined primarily to mountainous areas, apart from <a href="/wiki/Antarctica" title="Antarctica">Antarctica</a>.<a href="#cite_note-3">[3]</a> Snow affects such human activities as <a href="/wiki/Transportation" class="mw-redirect" title="Transportation">transportation</a>: creating the need for keeping roadways, wings, and windows clear; <a href="/wiki/Agriculture" title="Agriculture">agriculture</a>: providing water to crops and safeguarding livestock; <a href="/wiki/Sport" title="Sport">sports</a> such as <a href="/wiki/Skiing" title="Skiing">skiing</a>, <a href="/wiki/Snowboarding" title="Snowboarding">snowboarding</a>, and <a href="/wiki/Snowmobile" title="Snowmobile">snowmachine</a> travel; and <a href="/wiki/Warfare" class="mw-redirect" title="Warfare">warfare</a>. Snow affects <a href="/wiki/Ecosystem" title="Ecosystem">ecosystems</a>, as well, by providing an insulating layer during winter under which plants and animals are able to survive the cold.<a href="#cite_note-Snowenclyclopedia-1">[1]</a> <div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none"><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><label class="toctogglelabel" for="toctogglecheckbox"></label></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#Precipitation">1 Precipitation</a> <ul> <li class="toclevel-2 tocsection-2"><a href="#Cloud_formation">1.1 Cloud formation</a> <ul> <li class="toclevel-3 tocsection-3"><a href="#Low-pressure_areas">1.1.1 Low-pressure areas</a></li> <li class="toclevel-3 tocsection-4"><a href="#Fronts">1.1.2 Fronts</a></li> <li class="toclevel-3 tocsection-5"><a href="#Lake_and_ocean_effects">1.1.3 Lake and ocean effects</a></li> <li class="toclevel-3 tocsection-6"><a href="#Mountain_effects">1.1.4 Mountain effects</a></li> </ul> </li> <li class="toclevel-2 tocsection-7"><a href="#Cloud_physics">1.2 Cloud physics</a></li> <li class="toclevel-2 tocsection-8"><a href="#Classification_of_snowflakes">1.3 Classification of snowflakes</a></li> </ul> </li> <li class="toclevel-1 tocsection-9"><a href="#Accumulation">2 Accumulation</a> <ul> <li class="toclevel-2 tocsection-10"><a href="#Event">2.1 Event</a></li> <li class="toclevel-2 tocsection-11"><a href="#Distribution">2.2 Distribution</a></li> <li class="toclevel-2 tocsection-12"><a href="#Records">2.3 Records</a></li> </ul> </li> <li class="toclevel-1 tocsection-13"><a href="#Metamorphism">3 Metamorphism</a> <ul> <li class="toclevel-2 tocsection-14"><a href="#Seasonal">3.1 Seasonal</a></li> <li class="toclevel-2 tocsection-15"><a href="#Firn">3.2 Firn</a></li> </ul> </li> <li class="toclevel-1 tocsection-16"><a href="#Movement">4 Movement</a> <ul> <li class="toclevel-2 tocsection-17"><a href="#Drifting">4.1 Drifting</a></li> <li class="toclevel-2 tocsection-18"><a href="#Avalanche">4.2 Avalanche</a></li> <li class="toclevel-2 tocsection-19"><a href="#Melting">4.3 Melting</a></li> <li class="toclevel-2 tocsection-20"><a href="#Glaciers">4.4 Glaciers</a></li> </ul> </li> <li class="toclevel-1 tocsection-21"><a href="#Science">5 Science</a> <ul> <li class="toclevel-2 tocsection-22"><a href="#Measurement_and_classification">5.1 Measurement and classification</a></li> <li class="toclevel-2 tocsection-23"><a href="#Satellite_data">5.2 Satellite data</a></li> <li class="toclevel-2 tocsection-24"><a href="#Models">5.3 Models</a></li> </ul> </li> <li class="toclevel-1 tocsection-25"><a href="#Effects_on_civilization">6 Effects on civilization</a> <ul> <li class="toclevel-2 tocsection-26"><a href="#Transportation">6.1 Transportation</a> <ul> <li class="toclevel-3 tocsection-27"><a href="#Highway">6.1.1 Highway</a></li> <li class="toclevel-3 tocsection-28"><a href="#Aviation">6.1.2 Aviation</a></li> <li class="toclevel-3 tocsection-29"><a href="#Rail">6.1.3 Rail</a></li> <li class="toclevel-3 tocsection-30"><a href="#Construction">6.1.4 Construction</a></li> </ul> </li> <li class="toclevel-2 tocsection-31"><a href="#Agriculture">6.2 Agriculture</a></li> <li class="toclevel-2 tocsection-32"><a href="#Structures">6.3 Structures</a> <ul> <li class="toclevel-3 tocsection-33"><a href="#Roofs">6.3.1 Roofs</a></li> <li class="toclevel-3 tocsection-34"><a href="#Utility_lines">6.3.2 Utility lines</a></li> </ul> </li> <li class="toclevel-2 tocsection-35"><a href="#Sports_and_recreation">6.4 Sports and recreation</a></li> <li class="toclevel-2 tocsection-36"><a href="#Warfare">6.5 Warfare</a></li> </ul> </li> <li class="toclevel-1 tocsection-37"><a href="#Effects_on_plants_and_animals">7 Effects on plants and animals</a></li> <li class="toclevel-1 tocsection-38"><a href="#Outside_of_Earth">8 Outside of Earth</a></li> <li class="toclevel-1 tocsection-39"><a href="#See_also">9 See also</a></li> <li class="toclevel-1 tocsection-40"><a href="#References">10 References</a></li> <li class="toclevel-1 tocsection-41"><a href="#External_links">11 External links</a></li> </ul> </div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(1)"><h2 id="Precipitation">Precipitation</h2></div><section class="mf-section-1 collapsible-block" id="mf-section-1"> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Countries_receiving_snowfall.png" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Countries_receiving_snowfall.png/220px-Countries_receiving_snowfall.png" decoding="async" width="220" height="102" class="mw-file-element" data-file-width="1357" data-file-height="628"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 102px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Countries_receiving_snowfall.png/220px-Countries_receiving_snowfall.png" data-width="220" data-height="102" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Countries_receiving_snowfall.png/330px-Countries_receiving_snowfall.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Countries_receiving_snowfall.png/440px-Countries_receiving_snowfall.png 2x" data-class="mw-file-element"> </a><figcaption>Occurrence of snowfall:<style data-mw-deduplicate="TemplateStyles:r981673959">.mw-parser-output .legend{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .legend-color{display:inline-block;min-width:1.25em;height:1.25em;line-height:1.25;margin:1px 0;text-align:center;border:1px solid black;background-color:transparent;color:black}.mw-parser-output .legend-text{}</style><div class="legend"> All elevations</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"><div class="legend"> All elevations, not in all areas</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"><div class="legend"> Higher elevations, below rarely</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"><div class="legend"> Higher elevations only</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"><div class="legend"> Very high elevations only</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r981673959"><div class="legend"> None at any elevation</div></figcaption></figure> Snow develops in <a href="/wiki/Cloud" title="Cloud">clouds</a> that themselves are part of a larger weather system. The physics of snow crystal development in clouds results from a complex set of variables that include <a href="/wiki/Moisture" title="Moisture">moisture</a> content and temperatures. The resulting shapes of the falling and fallen crystals can be classified into a number of basic shapes and combinations thereof. Occasionally, some plate-like, dendritic and stellar-shaped snowflakes can form under clear sky with a very cold temperature inversion present.<a href="#cite_note-Classificationonground-4">[4]</a> <div class="mw-heading mw-heading3"><h3 id="Cloud_formation">Cloud formation</h3></div> Snow clouds usually occur in the context of larger weather systems, the most important of which is the low-pressure area, which typically incorporate warm and cold fronts as part of their circulation. Two additional and locally productive sources of snow are lake-effect (also sea-effect) storms and elevation effects, especially in mountains. <div class="mw-heading mw-heading4"><h4 id="Low-pressure_areas">Low-pressure areas</h4></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Extratropical_cyclone" title="Extratropical cyclone">Extratropical cyclone</a></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Feb242007_blizzard.gif" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Feb242007_blizzard.gif/220px-Feb242007_blizzard.gif" decoding="async" width="220" height="104" class="mw-file-element" data-file-width="3400" data-file-height="1600"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 104px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Feb242007_blizzard.gif/220px-Feb242007_blizzard.gif" data-width="220" data-height="104" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Feb242007_blizzard.gif/330px-Feb242007_blizzard.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/2c/Feb242007_blizzard.gif/440px-Feb242007_blizzard.gif 2x" data-class="mw-file-element"> </a><figcaption>Extratropical cyclonic snowstorm, February 24, 2007—(Click for animation.)</figcaption></figure> <a href="/wiki/Extratropical_cyclone" title="Extratropical cyclone">Mid-latitude cyclones</a> are <a href="/wiki/Low-pressure_area" title="Low-pressure area">low-pressure areas</a> which are capable of producing anything from cloudiness and mild <a href="/wiki/Winter_storm#Snow" title="Winter storm">snow storms</a> to heavy <a href="/wiki/Blizzard" title="Blizzard">blizzards</a>.<a href="#cite_note-ExtraLessonMillUni-5">[5]</a> During a hemisphere's <a href="/wiki/Autumn" title="Autumn">fall</a>, winter, and spring, the atmosphere over continents can be cold enough through the depth of the <a href="/wiki/Troposphere" title="Troposphere">troposphere</a> to cause snowfall. In the Northern Hemisphere, the northern side of the low-pressure area produces the most snow.<a href="#cite_note-6">[6]</a> For the southern <a href="/wiki/Mid-latitudes" class="mw-redirect" title="Mid-latitudes">mid-latitudes</a>, the side of a <a href="/wiki/Cyclone" title="Cyclone">cyclone</a> that produces the most snow is the southern side. <div class="mw-heading mw-heading4"><h4 id="Fronts">Fronts</h4></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Weather_front" title="Weather front">Weather front</a></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Snowsquall_line-Bourrasque_neige_frontal_NOAA.png" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Snowsquall_line-Bourrasque_neige_frontal_NOAA.png/220px-Snowsquall_line-Bourrasque_neige_frontal_NOAA.png" decoding="async" width="220" height="174" class="mw-file-element" data-file-width="1041" data-file-height="821"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 174px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Snowsquall_line-Bourrasque_neige_frontal_NOAA.png/220px-Snowsquall_line-Bourrasque_neige_frontal_NOAA.png" data-width="220" data-height="174" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Snowsquall_line-Bourrasque_neige_frontal_NOAA.png/330px-Snowsquall_line-Bourrasque_neige_frontal_NOAA.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Snowsquall_line-Bourrasque_neige_frontal_NOAA.png/440px-Snowsquall_line-Bourrasque_neige_frontal_NOAA.png 2x" data-class="mw-file-element"> </a><figcaption>Frontal snowsquall moving toward <a href="/wiki/Boston" title="Boston">Boston</a>, <a href="/wiki/Massachusetts" title="Massachusetts">Massachusetts</a></figcaption></figure> A <a href="/wiki/Cold_front" title="Cold front">cold front</a>, the leading edge of a cooler mass of air, can produce <a href="/wiki/Snowsquall#Frontal_snowsquall" class="mw-redirect" title="Snowsquall">frontal snowsqualls</a>—an intense frontal <a href="/wiki/Convective" class="mw-redirect" title="Convective">convective</a> line (similar to a <a href="/wiki/Rainband" title="Rainband">rainband</a>), when <a href="/wiki/Temperature" title="Temperature">temperature</a> is near freezing at the surface. The strong convection that develops has enough moisture to produce whiteout conditions at places which the line passes over as the wind causes intense blowing snow.<a href="#cite_note-EC-2-7">[7]</a> This type of snowsquall generally lasts less than 30 minutes at any point along its path, but the motion of the line can cover large distances. Frontal squalls may form a short distance ahead of the surface cold front or behind the cold front where there may be a deepening low-pressure system or a series of <a href="/wiki/Trough_(meteorology)" title="Trough (meteorology)">trough</a> lines which act similar to a traditional cold frontal passage. In situations where squalls develop post-frontally, it is not unusual to have two or three linear squall bands pass in rapid succession separated only by 25 miles (40 kilometers), with each passing the same point roughly 30 minutes apart. In cases where there is a large amount of vertical growth and mixing, the squall may develop embedded cumulonimbus clouds resulting in lightning and thunder which is dubbed <a href="/wiki/Thundersnow" title="Thundersnow">thundersnow</a>. A <a href="/wiki/Warm_front" title="Warm front">warm front</a> can produce snow for a period as warm, moist air overrides below-freezing air and creates precipitation at the boundary. Often, snow transitions to rain in the warm sector behind the front.<a href="#cite_note-EC-2-7">[7]</a> <div class="mw-heading mw-heading4"><h4 id="Lake_and_ocean_effects">Lake and ocean effects</h4></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Lake-effect_snow" title="Lake-effect snow">Lake-effect snow</a></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Lake_Effect_Snow_on_Earth.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Lake_Effect_Snow_on_Earth.jpg/220px-Lake_Effect_Snow_on_Earth.jpg" decoding="async" width="220" height="211" class="mw-file-element" data-file-width="1231" data-file-height="1183"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 211px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Lake_Effect_Snow_on_Earth.jpg/220px-Lake_Effect_Snow_on_Earth.jpg" data-width="220" data-height="211" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Lake_Effect_Snow_on_Earth.jpg/330px-Lake_Effect_Snow_on_Earth.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Lake_Effect_Snow_on_Earth.jpg/440px-Lake_Effect_Snow_on_Earth.jpg 2x" data-class="mw-file-element"> </a><figcaption>Cold northwesterly wind over <a href="/wiki/Lake_Superior" title="Lake Superior">Lake Superior</a> and <a href="/wiki/Lake_Michigan" title="Lake Michigan">Lake Michigan</a> creating lake-effect snowfall</figcaption></figure> Lake-effect snow is produced during cooler atmospheric conditions when a cold air mass moves across long expanses of warmer <a href="/wiki/Lake" title="Lake">lake</a> water, warming the lower layer of air which picks up <a href="/wiki/Water_vapor" title="Water vapor">water vapor</a> from the lake, rises up through the colder air above, freezes, and is deposited on the <a href="/wiki/Leeward" class="mw-redirect" title="Leeward">leeward</a> (downwind) shores.<a href="#cite_note-8">[8]</a><a href="#cite_note-9">[9]</a> The same effect occurring over bodies of salt water is termed ocean-effect or bay-effect snow. The effect is enhanced when the moving air mass is uplifted by the <a href="/wiki/Orographic_lift" title="Orographic lift">orographic</a> influence of higher elevations on the downwind shores. This uplifting can produce narrow but very intense bands of precipitation which may deposit at a rate of many inches of snow each hour, often resulting in a large amount of total snowfall.<a href="#cite_note-mass-10">[10]</a> The areas affected by lake-effect snow are called <a href="/wiki/Snowbelt" title="Snowbelt">snowbelts</a>. These include areas east of the <a href="/wiki/Great_Lakes" title="Great Lakes">Great Lakes</a>, the west coasts of northern Japan, the <a href="/wiki/Kamchatka_Peninsula" title="Kamchatka Peninsula">Kamchatka Peninsula</a> in Russia, and areas near the <a href="/wiki/Great_Salt_Lake" title="Great Salt Lake">Great Salt Lake</a>, <a href="/wiki/Black_Sea" title="Black Sea">Black Sea</a>, <a href="/wiki/Caspian_Sea" title="Caspian Sea">Caspian Sea</a>, <a href="/wiki/Baltic_Sea" title="Baltic Sea">Baltic Sea</a>, and parts of the northern Atlantic Ocean.<a href="#cite_note-SCHMID-11">[11]</a> <div class="mw-heading mw-heading4"><h4 id="Mountain_effects">Mountain effects</h4></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Precipitation_types#Orographic" title="Precipitation types">Precipitation types § Orographic</a></div> <a href="/wiki/Orography" title="Orography">Orographic</a> or <a href="/wiki/Relief" title="Relief">relief</a> snowfall is created when moist air is forced up the <a href="/wiki/Windward" class="mw-redirect" title="Windward">windward</a> side of <a href="/wiki/Mountain" title="Mountain">mountain</a> ranges by a large-scale <a href="/wiki/Wind" title="Wind">wind</a> flow. The lifting of moist air up the side of a mountain range results in <a href="/wiki/Adiabatic_lapse_rate" class="mw-redirect" title="Adiabatic lapse rate">adiabatic</a> cooling, and ultimately <a href="/wiki/Condensation" title="Condensation">condensation</a> and precipitation. Moisture is gradually removed from the air by this process, leaving <a href="/wiki/Foehn_wind" title="Foehn wind">drier and warmer air</a> on the descending, or <a href="/wiki/Leeward" class="mw-redirect" title="Leeward">leeward</a>, side.<a href="#cite_note-MT-12">[12]</a> The resulting enhanced snowfall,<a href="#cite_note-13">[13]</a> along with the <a href="/wiki/Lapse_rate" title="Lapse rate">decrease in temperature</a> with elevation,<a href="#cite_note-14">[14]</a> combine to increase snow depth and seasonal persistence of snowpack in snow-prone areas.<a href="#cite_note-Snowenclyclopedia-1">[1]</a><a href="#cite_note-Singh-15">[15]</a> <a href="/wiki/Mountain_waves" class="mw-redirect" title="Mountain waves">Mountain waves</a> have also been found to help enhance precipitation amounts downwind of mountain ranges by enhancing the lift needed for condensation and precipitation.<a href="#cite_note-16">[16]</a> <div class="mw-heading mw-heading3"><h3 id="Cloud_physics">Cloud physics</h3></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Snowflake" title="Snowflake">Snowflake</a></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><video id="mwe_player_0" poster="//upload.wikimedia.org/wikipedia/commons/thumb/1/1e/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm/220px--Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm.jpg" controls="" preload="none" data-mw-tmh="" class="mw-file-element" width="220" height="124" data-durationhint="39" data-mwtitle="Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm" data-mwprovider="wikimediacommons" resource="/wiki/File:Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm"><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/1/1e/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm.480p.vp9.webm" type='video/webm; codecs="vp9, opus"' data-transcodekey="480p.vp9.webm" data-width="854" data-height="480"></source><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/1/1e/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm.720p.vp9.webm" type='video/webm; codecs="vp9, opus"' data-transcodekey="720p.vp9.webm" data-width="1280" data-height="720"></source><source src="//upload.wikimedia.org/wikipedia/commons/1/1e/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm" type='video/webm; codecs="vp9"' data-width="1920" data-height="1080"></source><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/1/1e/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm.1080p.vp9.webm" type='video/webm; codecs="vp9, opus"' data-transcodekey="1080p.vp9.webm" data-width="1920" data-height="1080"></source><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/1/1e/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm.240p.vp9.webm" type='video/webm; codecs="vp9, opus"' data-transcodekey="240p.vp9.webm" data-width="426" data-height="240"></source><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/1/1e/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm.360p.webm" type='video/webm; codecs="vp8, vorbis"' data-transcodekey="360p.webm" data-width="640" data-height="360"></source><source src="//upload.wikimedia.org/wikipedia/commons/transcoded/1/1e/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm/Snow_day_in_Adachi_Tokyo_-_2018_1_22.webm.360p.vp9.webm" type='video/webm; codecs="vp9, opus"' data-transcodekey="360p.vp9.webm" data-width="640" data-height="360"></source></video><figcaption>Snow heavily falling in <a href="/wiki/Tokyo" title="Tokyo">Tokyo</a>, <a href="/wiki/Japan" title="Japan">Japan</a></figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Feathery_Snow_Crystals_(2217830221).jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Feathery_Snow_Crystals_%282217830221%29.jpg/220px-Feathery_Snow_Crystals_%282217830221%29.jpg" decoding="async" width="220" height="165" class="mw-file-element" data-file-width="2000" data-file-height="1500"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 165px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Feathery_Snow_Crystals_%282217830221%29.jpg/220px-Feathery_Snow_Crystals_%282217830221%29.jpg" data-width="220" data-height="165" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Feathery_Snow_Crystals_%282217830221%29.jpg/330px-Feathery_Snow_Crystals_%282217830221%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Feathery_Snow_Crystals_%282217830221%29.jpg/440px-Feathery_Snow_Crystals_%282217830221%29.jpg 2x" data-class="mw-file-element"> </a><figcaption>Freshly fallen snowflakes</figcaption></figure> A snowflake consists of roughly 1019 water <a href="/wiki/Molecule" title="Molecule">molecules</a> which are added to its core at different rates and in different patterns depending on the changing temperature and humidity within the atmosphere that the snowflake falls through on its way to the ground. As a result, snowflakes differ from each other though they follow similar patterns.<a href="#cite_note-17">[17]</a><a href="#cite_note-18">[18]</a><a href="#cite_note-19">[19]</a> Snow crystals form when tiny <a href="/wiki/Supercool" class="mw-redirect" title="Supercool">supercooled</a> cloud droplets (about 10 <a href="/wiki/Micrometre" title="Micrometre">μm</a> in diameter) <a href="/wiki/Freezing" title="Freezing">freeze</a>. These droplets are able to remain liquid at temperatures lower than −18 °C (0 °F), because to freeze, a few molecules in the droplet need to get together by chance to form an arrangement similar to that in an ice lattice. The droplet freezes around this "nucleus". In warmer clouds, an aerosol particle or "ice nucleus" must be present in (or in contact with) the droplet to act as a nucleus. Ice nuclei are very rare compared to cloud condensation nuclei on which liquid droplets form. Clays, desert dust, and biological particles can be nuclei.<a href="#cite_note-Christner2008-20">[20]</a> Artificial nuclei include particles of <a href="/wiki/Silver_iodide" title="Silver iodide">silver iodide</a> and <a href="/wiki/Dry_ice" title="Dry ice">dry ice</a>, and these are used to stimulate precipitation in <a href="/wiki/Cloud_seeding" title="Cloud seeding">cloud seeding</a>.<a href="#cite_note-21">[21]</a> Once a droplet has frozen, it grows in the supersaturated environment—one where air is saturated with respect to ice when the temperature is below the freezing point. The droplet then grows by diffusion of water <a href="/wiki/Molecule" title="Molecule">molecules</a> in the air (vapor) onto the ice crystal surface where they are collected. Because water droplets are so much more numerous than the ice crystals, the crystals are able to grow to hundreds of micrometers or millimeters in size at the expense of the water droplets by the <a href="/wiki/Wegener%E2%80%93Bergeron%E2%80%93Findeisen_process" title="Wegener–Bergeron–Findeisen process">Wegener–Bergeron–Findeisen process</a>. These large crystals are an efficient source of precipitation, since they fall through the atmosphere due to their mass, and may collide and stick together in clusters, or aggregates. These aggregates are <a href="/wiki/Snowflake" title="Snowflake">snowflakes</a>, and are usually the type of ice particle that falls to the ground.<a href="#cite_note-natgeojan07-22">[22]</a> Although the ice is clear, scattering of light by the crystal facets and hollows/imperfections mean that the crystals often appear white in color due to <a href="/wiki/Diffuse_reflection" title="Diffuse reflection">diffuse reflection</a> of the whole <a href="/wiki/Spectrum" title="Spectrum">spectrum</a> of <a href="/wiki/Light" title="Light">light</a> by the small ice particles.<a href="#cite_note-23">[23]</a> <div class="mw-heading mw-heading3"><h3 id="Classification_of_snowflakes">Classification of snowflakes</h3></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Snowflake#Classification" title="Snowflake">Snowflake § Classification</a></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Snowflakeschapte00warriala-p11-p21-p29-p39.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Snowflakeschapte00warriala-p11-p21-p29-p39.jpg/220px-Snowflakeschapte00warriala-p11-p21-p29-p39.jpg" decoding="async" width="220" height="332" class="mw-file-element" data-file-width="3420" data-file-height="5165"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 332px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Snowflakeschapte00warriala-p11-p21-p29-p39.jpg/220px-Snowflakeschapte00warriala-p11-p21-p29-p39.jpg" data-width="220" data-height="332" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Snowflakeschapte00warriala-p11-p21-p29-p39.jpg/330px-Snowflakeschapte00warriala-p11-p21-p29-p39.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0e/Snowflakeschapte00warriala-p11-p21-p29-p39.jpg/440px-Snowflakeschapte00warriala-p11-p21-p29-p39.jpg 2x" data-class="mw-file-element"> </a><figcaption>An early classification of snowflakes by <a href="/wiki/Israel_Perkins_Warren" title="Israel Perkins Warren">Israel Perkins Warren</a><a href="#cite_note-24">[24]</a></figcaption></figure> <a href="/wiki/Micrography" title="Micrography">Micrography</a> of thousands of snowflakes from 1885 onward, starting with <a href="/wiki/Wilson_Bentley" title="Wilson Bentley">Wilson Alwyn Bentley</a>, revealed the wide diversity of snowflakes within a classifiable set of patterns.<a href="#cite_note-25">[25]</a> Closely matching snow crystals have been observed.<a href="#cite_note-identical_crystals-26">[26]</a> <a href="/wiki/Ukichiro_Nakaya" title="Ukichiro Nakaya">Ukichiro Nakaya</a> developed a crystal morphology diagram, relating crystal shapes to the temperature and moisture conditions under which they formed, which is summarized in the following table.<a href="#cite_note-Snowenclyclopedia-1">[1]</a> <table class="wikitable"> <caption>Crystal structure morphology as a function of temperature and water saturation </caption> <tbody><tr> <th colspan="2">Temperature range </th> <th colspan="2">Saturation range </th> <th colspan="2">Types of snow crystal </th></tr> <tr> <th>°C </th> <th>°F </th> <th>g/m3 </th> <th>oz/cu yd </th> <th>below saturation </th> <th>above saturation </th></tr> <tr> <td style="text-align:right;">0 to −3.5 </td> <td style="text-align:right;">32 to 26 </td> <td style="text-align:right;">0.0 to 0.5 </td> <td style="text-align:right;">0.000 to 0.013 </td> <td style="text-align:center;">Solid plates </td> <td style="text-align:center;">Thin plates Dendrites </td></tr> <tr> <td style="text-align:right;">−3.5 to −10 </td> <td style="text-align:right;">26 to 14 </td> <td style="text-align:right;">0.5 to 1.2 </td> <td style="text-align:right;">0.013 to 0.032 </td> <td style="text-align:center;">Solid prisms Hollow prisms </td> <td style="text-align:center;">Hollow prisms Needles </td></tr> <tr> <td style="text-align:right;">−10 to −22 </td> <td style="text-align:right;">14 to −8 </td> <td style="text-align:right;">1.2 to 1.4 </td> <td style="text-align:right;">0.032 to 0.038 </td> <td style="text-align:center;">Thin plates Solid plates </td> <td style="text-align:center;">Sectored plates Dendrites </td></tr> <tr> <td style="text-align:right;">−22 to −40 </td> <td style="text-align:right;">−8 to −40 </td> <td style="text-align:right;">1.2 to 0.1 </td> <td style="text-align:right;">0.0324 to 0.0027 </td> <td style="text-align:center;">Thin plates Solid plates </td> <td style="text-align:center;">Columns Prisms </td></tr></tbody></table> Nakaya discovered that the shape is also a function of whether the prevalent moisture is above or below saturation. Forms below the saturation line tend more toward solid and compact while crystals formed in supersaturated air tend more toward lacy, delicate, and ornate. Many more complex growth patterns also form, which include side-planes, bullet-rosettes, and planar types, depending on the conditions and ice nuclei.<a href="#cite_note-BaileyHallett-27">[27]</a><a href="#cite_note-28">[28]</a><a href="#cite_note-29">[29]</a> If a crystal has started forming in a column growth regime at around −5 °C (23 °F) and then falls into the warmer plate-like regime, plate or dendritic crystals sprout at the end of the column, producing so called "capped columns".<a href="#cite_note-natgeojan07-22">[22]</a> Magono and Lee devised a classification of freshly formed snow crystals that includes 80 distinct shapes. They documented each with micrographs.<a href="#cite_note-magono-lee-30">[30]</a> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(2)"><h2 id="Accumulation">Accumulation</h2></div><section class="mf-section-2 collapsible-block" id="mf-section-2"> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Earth-satellite-seasons.gif" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Earth-satellite-seasons.gif/260px-Earth-satellite-seasons.gif" decoding="async" width="260" height="130" class="mw-file-element" data-file-width="540" data-file-height="270"></noscript><span class="lazy-image-placeholder" style="width: 260px;height: 130px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Earth-satellite-seasons.gif/260px-Earth-satellite-seasons.gif" data-width="260" data-height="130" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Earth-satellite-seasons.gif/390px-Earth-satellite-seasons.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cf/Earth-satellite-seasons.gif/520px-Earth-satellite-seasons.gif 2x" data-class="mw-file-element"> </a><figcaption>An animation of seasonal snow changes, based on satellite imagery</figcaption></figure> Snow accumulates from a series of snow events, punctuated by freezing and thawing, over areas that are cold enough to retain snow seasonally or perennially. Major snow-prone areas include the <a href="/wiki/Arctic" title="Arctic">Arctic</a> and <a href="/wiki/Antarctic" title="Antarctic">Antarctic</a>, the Northern Hemisphere, and alpine regions. The liquid equivalent of snowfall may be evaluated using a <a href="/wiki/Snow_gauge" title="Snow gauge">snow gauge</a><a href="#cite_note-31">[31]</a> or with a standard <a href="/wiki/Rain_gauge" title="Rain gauge">rain gauge</a>, adjusted for winter by removal of a funnel and inner cylinder.<a href="#cite_note-32">[32]</a> Both types of gauges melt the accumulated snow and report the amount of water collected.<a href="#cite_note-33">[33]</a> At some <a href="/wiki/Automatic_weather_station" title="Automatic weather station">automatic weather stations</a> an ultrasonic snow depth sensor may be used to augment the precipitation gauge.<a href="#cite_note-34">[34]</a> <div class="mw-heading mw-heading3"><h3 id="Event">Event</h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Winter_Storm_Jonas_2016_NYC_Pershing_Square.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Winter_Storm_Jonas_2016_NYC_Pershing_Square.jpg/220px-Winter_Storm_Jonas_2016_NYC_Pershing_Square.jpg" decoding="async" width="220" height="165" class="mw-file-element" data-file-width="4608" data-file-height="3456"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 165px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Winter_Storm_Jonas_2016_NYC_Pershing_Square.jpg/220px-Winter_Storm_Jonas_2016_NYC_Pershing_Square.jpg" data-width="220" data-height="165" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Winter_Storm_Jonas_2016_NYC_Pershing_Square.jpg/330px-Winter_Storm_Jonas_2016_NYC_Pershing_Square.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Winter_Storm_Jonas_2016_NYC_Pershing_Square.jpg/440px-Winter_Storm_Jonas_2016_NYC_Pershing_Square.jpg 2x" data-class="mw-file-element"> </a><figcaption><a href="/wiki/New_York_City" title="New York City">New York City</a> during a <a href="/wiki/January_2016_United_States_blizzard" title="January 2016 United States blizzard">2016 blizzard</a>, which produced strong winds and record-breaking snowfall.</figcaption></figure> <a href="/wiki/Snow_flurry" title="Snow flurry">Snow flurry</a>, <a href="/wiki/Shower_(precipitation)" title="Shower (precipitation)">snow shower</a>, <a href="/wiki/Snow_storm" class="mw-redirect" title="Snow storm">snow storm</a> and <a href="/wiki/Blizzard" title="Blizzard">blizzard</a> describe snow events of progressively greater duration and intensity.<a href="#cite_note-35">[35]</a> A <a href="/wiki/Blizzard" title="Blizzard">blizzard</a> is a weather condition involving snow and has varying definitions in different parts of the world. In the <a href="/wiki/United_States" title="United States">United States</a>, a blizzard occurs when two conditions are met for a period of three hours or more: a sustained wind or frequent gusts to 35 miles per hour (16 m/s), and sufficient snow in the air to reduce visibility to less than 0.4 kilometers (0.25 mi).<a href="#cite_note-36">[36]</a> In <a href="/wiki/Canada" title="Canada">Canada</a> and the <a href="/wiki/United_Kingdom" title="United Kingdom">United Kingdom</a>, the criteria are similar.<a href="#cite_note-37">[37]</a><a href="#cite_note-38">[38]</a> While heavy snowfall often occurs during blizzard conditions, falling snow is not a requirement, as <a href="/wiki/Blowing_snow" title="Blowing snow">blowing snow</a> can create a <a href="/wiki/Ground_blizzard" title="Ground blizzard">ground blizzard</a>.<a href="#cite_note-39">[39]</a> Snowstorm intensity may be categorized by visibility and depth of accumulation.<a href="#cite_note-40">[40]</a> Snowfall's intensity is determined by <a href="/wiki/Visibility" title="Visibility">visibility</a>, as follows:<a href="#cite_note-41">[41]</a> <ul><li>Light: visibility greater than 1 kilometer (0.6 mi)</li> <li>Moderate: visibility restrictions between 0.5 and 1 kilometer (0.3 and 0.6 mi)</li> <li>Heavy: visibility is less than 0.5 kilometers (0.3 mi)</li></ul> <a href="/wiki/Snowsquall" class="mw-redirect" title="Snowsquall">Snowsqualls</a> may deposit snow in bands that extend from bodies of water as lake-event weather or result from the passage of an upper-level front.<a href="#cite_note-popsci/nasa-snowstorm-42">[42]</a><a href="#cite_note-weather/bandedsnowfall-43">[43]</a><a href="#cite_note-nbcmontana/snow-bands-44">[44]</a> The International Classification for Seasonal Snow on the Ground defines "height of new snow" as the depth of freshly fallen snow, in centimeters as measured with a ruler, that accumulated on a <a href="/wiki/Snowboard_(meteorology)" title="Snowboard (meteorology)">snowboard</a> during an observation period of 24 hours, or other observation interval. After the measurement, the snow is cleared from the board and the board is placed flush with the snow surface to provide an accurate measurement at the end of the next interval.<a href="#cite_note-Classificationonground-4">[4]</a> Melting, compacting, blowing and drifting contribute to the difficulty of measuring snowfall.<a href="#cite_note-45">[45]</a> <div class="mw-heading mw-heading3"><h3 id="Distribution">Distribution</h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Snow-covered_fir_trees.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/12/Snow-covered_fir_trees.jpg/220px-Snow-covered_fir_trees.jpg" decoding="async" width="220" height="165" class="mw-file-element" data-file-width="1600" data-file-height="1200"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 165px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/1/12/Snow-covered_fir_trees.jpg/220px-Snow-covered_fir_trees.jpg" data-width="220" data-height="165" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/12/Snow-covered_fir_trees.jpg/330px-Snow-covered_fir_trees.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/12/Snow-covered_fir_trees.jpg/440px-Snow-covered_fir_trees.jpg 2x" data-class="mw-file-element"> </a><figcaption>Snow-covered trees in <a href="/wiki/Kuusamo" title="Kuusamo">Kuusamo</a>, <a href="/wiki/Finland" title="Finland">Finland</a></figcaption></figure> Glaciers with their permanent snowpacks cover about 10% of the earth's surface, while seasonal snow covers about nine percent,<a href="#cite_note-Snowenclyclopedia-1">[1]</a> mostly in the Northern Hemisphere, where seasonal snow covers about 40 million square kilometres (15×10<s style="display:none">^</s>6 sq mi), according to a 1987 estimate.<a href="#cite_note-46">[46]</a> A 2007 estimate of snow cover over the Northern Hemisphere suggested that, on average, snow cover ranges from a minimum extent of 2 million square kilometres (0.77×10<s style="display:none">^</s>6 sq mi) each August to a maximum extent of 45 million square kilometres (17×10<s style="display:none">^</s>6 sq mi) each January or nearly half of the land surface in that hemisphere.<a href="#cite_note-47">[47]</a><a href="#cite_note-D%C3%A9ry-48">[48]</a> A study of Northern Hemisphere snow cover extent for the period 1972–2006 suggests a reduction of 0.5 million square kilometres (0.19×10<s style="display:none">^</s>6 sq mi) over the 35-year period.<a href="#cite_note-D%C3%A9ry-48">[48]</a> <div class="mw-heading mw-heading3"><h3 id="Records">Records</h3></div> The following are world records regarding snowfall and snowflakes: <ul><li>Highest seasonal total snowfall – The world record for the highest seasonal total snowfall was measured in the United States at <a href="/wiki/Mt._Baker_Ski_Area" title="Mt. Baker Ski Area">Mt. Baker Ski Area</a>, outside of the city of <a href="/wiki/Bellingham,_Washington" title="Bellingham, Washington">Bellingham, Washington</a> during the 1998–1999 season. Mount Baker received 2,896 cm (95.01 ft) of snow,<a href="#cite_note-49">[49]</a> thus surpassing the previous record holder, <a href="/wiki/Mount_Rainier" title="Mount Rainier">Mount Rainier</a>, Washington, which during the 1971–1972 season received 2,850 cm (93.5 ft) of snow.<a href="#cite_note-50">[50]</a></li> <li>Highest seasonal average annual snowfall – The world record for the highest average annual snowfall is 1,764 cm (57.87 ft),<a href="#cite_note-51">[51]</a> measured in <a href="/wiki/Sukayu_Onsen" title="Sukayu Onsen">Sukayu Onsen</a>, Japan for the period of 1981–2010.</li> <li>Largest snowflake – According to <a href="/wiki/Guinness_World_Records" title="Guinness World Records">Guinness World Records</a>, the world's largest snowflake fell in January 1887 outside present-day <a href="/wiki/Miles_City,_Montana" title="Miles City, Montana">Miles City</a>, <a href="/wiki/Montana" title="Montana">Montana</a>. It measured 38 cm (15 in) in diameter.<a href="#cite_note-52">[52]</a></li></ul> The cities (more than 100,000 inhabitants) with the highest annual snowfall are <a href="/wiki/Aomori" title="Aomori">Aomori</a> (792 cm), <a href="/wiki/Sapporo" title="Sapporo">Sapporo</a> (485 cm) and <a href="/wiki/Toyama,_Toyama" class="mw-redirect" title="Toyama, Toyama">Toyama</a> (363 cm) in <a href="/wiki/Japan" title="Japan">Japan</a>, followed by <a href="/wiki/St._John%27s,_Newfoundland_and_Labrador" title="St. John's, Newfoundland and Labrador">St. John's</a> (332 cm) and <a href="/wiki/Quebec_City" title="Quebec City">Quebec City</a> (315 cm) in <a href="/wiki/Canada" title="Canada">Canada</a>, and <a href="/wiki/Syracuse,_NY" class="mw-redirect" title="Syracuse, NY">Syracuse, NY</a> (325 cm).<a href="#cite_note-53">[53]</a> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(3)"><h2 id="Metamorphism">Metamorphism</h2></div><section class="mf-section-3 collapsible-block" id="mf-section-3"> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Sparkling-snow.crystals.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Sparkling-snow.crystals.jpg/220px-Sparkling-snow.crystals.jpg" decoding="async" width="220" height="165" class="mw-file-element" data-file-width="2032" data-file-height="1524"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 165px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Sparkling-snow.crystals.jpg/220px-Sparkling-snow.crystals.jpg" data-width="220" data-height="165" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Sparkling-snow.crystals.jpg/330px-Sparkling-snow.crystals.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ed/Sparkling-snow.crystals.jpg/440px-Sparkling-snow.crystals.jpg 2x" data-class="mw-file-element"> </a><figcaption>Fresh snow beginning to metamorphose: The surface shows wind packing and <a href="/wiki/Sastrugi" title="Sastrugi">sastrugi</a>. In the foreground are <a href="/wiki/Hoar_frost" class="mw-redirect" title="Hoar frost">hoar frost</a> crystals, formed by refrozen water vapor emerging to the cold surface.</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Svalbard-Sastrugi-Snow.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Svalbard-Sastrugi-Snow.jpg/220px-Svalbard-Sastrugi-Snow.jpg" decoding="async" width="220" height="123" class="mw-file-element" data-file-width="4402" data-file-height="2464"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 123px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Svalbard-Sastrugi-Snow.jpg/220px-Svalbard-Sastrugi-Snow.jpg" data-width="220" data-height="123" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Svalbard-Sastrugi-Snow.jpg/330px-Svalbard-Sastrugi-Snow.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/ce/Svalbard-Sastrugi-Snow.jpg/440px-Svalbard-Sastrugi-Snow.jpg 2x" data-class="mw-file-element"> </a><figcaption>Sastrugi formed during a blizzard just a few hours earlier.</figcaption></figure> According to the International Association of Cryospheric Sciences, snow metamorphism is "the transformation that the snow undergoes in the period from deposition to either melting or passage to glacial ice".<a href="#cite_note-Classificationonground-4">[4]</a> Starting as a powdery deposition, snow becomes more granular when it begins to compact under its own weight, be blown by the wind, sinter particles together and commence the cycle of melting and refreezing. Water vapor plays a role as it deposits ice crystals, known as <a href="/wiki/Hoar_frost" class="mw-redirect" title="Hoar frost">hoar frost</a>, during cold, still conditions.<a href="#cite_note-54">[54]</a> During this transition, snow "is a highly porous, sintered material made up of a continuous ice structure and a continuously connected pore space, forming together the snow microstructure". Almost always near its melting temperature, a snowpack is continually transforming these properties wherein all three phases of water may coexist, including liquid water partially filling the pore space. After deposition, snow progresses on one of two paths that determine its fate, either by ablation (mostly by melting) from a snow fall or seasonal snowpack, or by transitioning from <a href="/wiki/Firn" title="Firn">firn</a> (multi-year snow) into glacier ice.<a href="#cite_note-Classificationonground-4">[4]</a> <div class="mw-heading mw-heading3"><h3 id="Seasonal">Seasonal</h3></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main articles: <a href="/wiki/Snowpack" title="Snowpack">Snowpack</a> and <a href="/wiki/N%C3%A9v%C3%A9" title="Névé">Névé</a></div> Over the course of time, a snowpack may settle under its own weight until its density is approximately 30% of water. Increases in density above this initial compression occur primarily by melting and refreezing, caused by temperatures above freezing or by direct solar radiation. In colder climates, snow lies on the ground all winter. By late spring, snow densities typically reach a maximum of 50% of water.<a href="#cite_note-55">[55]</a> Snow that persists into summer evolves into <a href="/wiki/N%C3%A9v%C3%A9" title="Névé">névé</a>, granular snow, which has been partially melted, refrozen and compacted. Névé has a minimum <a href="/wiki/Density" title="Density">density</a> of 500 kilograms per cubic metre (31 lb/cu ft), which is <a href="/wiki/Density#Water" title="Density">roughly half</a> of the density of liquid water.<a href="#cite_note-56">[56]</a> <div class="mw-heading mw-heading3"><h3 id="Firn">Firn</h3></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Firn" title="Firn">Firn</a></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Firn_field_on_the_top_of_S%C3%A4uleck.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Firn_field_on_the_top_of_S%C3%A4uleck.jpg/220px-Firn_field_on_the_top_of_S%C3%A4uleck.jpg" decoding="async" width="220" height="146" class="mw-file-element" data-file-width="800" data-file-height="531"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 146px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Firn_field_on_the_top_of_S%C3%A4uleck.jpg/220px-Firn_field_on_the_top_of_S%C3%A4uleck.jpg" data-width="220" data-height="146" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/87/Firn_field_on_the_top_of_S%C3%A4uleck.jpg/330px-Firn_field_on_the_top_of_S%C3%A4uleck.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/87/Firn_field_on_the_top_of_S%C3%A4uleck.jpg/440px-Firn_field_on_the_top_of_S%C3%A4uleck.jpg 2x" data-class="mw-file-element"> </a><figcaption><a href="/wiki/Firn" title="Firn">Firn</a>—metamorphosed multi-year snow</figcaption></figure> Firn is snow that has persisted for multiple years and has been <a href="/wiki/Recrystallization_(chemistry)" title="Recrystallization (chemistry)">recrystallized</a> into a substance denser than <a href="/wiki/N%C3%A9v%C3%A9" title="Névé">névé</a>, yet less dense and hard than glacial <a href="/wiki/Ice" title="Ice">ice</a>. Firn resembles caked sugar and is very resistant to shovelling. Its density generally ranges from 550 to 830 kilograms per cubic metre (34 to 52 lb/cu ft), and it can often be found underneath the snow that accumulates at the head of a <a href="/wiki/Glacier" title="Glacier">glacier</a>. The minimum altitude that firn accumulates on a glacier is called the firn limit, firn line or snowline.<a href="#cite_note-Snowenclyclopedia-1">[1]</a><a href="#cite_note-Glacialprocess-57">[57]</a> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(4)"><h2 id="Movement">Movement</h2></div><section class="mf-section-4 collapsible-block" id="mf-section-4"> There are four main mechanisms for movement of deposited snow: drifting of unsintered snow, avalanches of accumulated snow on steep slopes, snowmelt during thaw conditions, and the movement of glaciers after snow has persisted for multiple years and metamorphosed into glacier ice. <div class="mw-heading mw-heading3"><h3 id="Drifting">Drifting</h3></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Long_Mynd_snowdrift.jpeg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/84/Long_Mynd_snowdrift.jpeg/220px-Long_Mynd_snowdrift.jpeg" decoding="async" width="220" height="165" class="mw-file-element" data-file-width="1154" data-file-height="866"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 165px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/8/84/Long_Mynd_snowdrift.jpeg/220px-Long_Mynd_snowdrift.jpeg" data-width="220" data-height="165" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/84/Long_Mynd_snowdrift.jpeg/330px-Long_Mynd_snowdrift.jpeg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/84/Long_Mynd_snowdrift.jpeg/440px-Long_Mynd_snowdrift.jpeg 2x" data-class="mw-file-element"> </a><figcaption>Snow drifts forming around downwind obstructions</figcaption></figure> When powdery snow drifts with the <a href="/wiki/Wind" title="Wind">wind</a> from the location where it originally fell,<a href="#cite_note-58">[58]</a> forming deposits with a depth of several meters in isolated locations.<a href="#cite_note-59">[59]</a> After attaching to hillsides, blown snow can evolve into a snow slab, which is an avalanche hazard on steep slopes.<a href="#cite_note-McClung_2006-60">[60]</a> <div class="mw-heading mw-heading3"><h3 id="Avalanche">Avalanche</h3></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Avalanche" title="Avalanche">Avalanche</a></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:2007-02-15-CLB-Couloir2-1c.JPG" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3b/2007-02-15-CLB-Couloir2-1c.JPG/220px-2007-02-15-CLB-Couloir2-1c.JPG" decoding="async" width="220" height="165" class="mw-file-element" data-file-width="1317" data-file-height="988"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 165px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3b/2007-02-15-CLB-Couloir2-1c.JPG/220px-2007-02-15-CLB-Couloir2-1c.JPG" data-width="220" data-height="165" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3b/2007-02-15-CLB-Couloir2-1c.JPG/330px-2007-02-15-CLB-Couloir2-1c.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3b/2007-02-15-CLB-Couloir2-1c.JPG/440px-2007-02-15-CLB-Couloir2-1c.JPG 2x" data-class="mw-file-element"> </a><figcaption>A powder snow avalanche</figcaption></figure> An avalanche (also called a snowslide or snowslip) is a rapid flow of snow down a sloping surface. Avalanches are typically triggered in a starting zone from a mechanical failure in the snowpack (slab avalanche) when the forces on the snow exceed its strength but sometimes only with gradually widening (loose snow avalanche). After initiation, avalanches usually accelerate rapidly and grow in mass and volume as they <a href="/wiki/Entrainment_(physical_geography)" title="Entrainment (physical geography)">entrain</a> more snow. If the avalanche moves fast enough some of the snow may mix with the air forming a powder snow avalanche, which is a type of <a href="/wiki/Gravity_current" title="Gravity current">gravity current</a>. They occur in three major mechanisms:<a href="#cite_note-McClung_2006-60">[60]</a> <ul><li>Slab avalanches occur in snow that has been deposited, or redeposited by wind. They have the characteristic appearance of a block (slab) of snow cut out from its surroundings by fractures. These account for most back-country fatalities.</li> <li><a href="/wiki/Powder_snow_avalanche" title="Powder snow avalanche">Powder snow avalanches</a> result from a deposition of fresh dry powder and generate a powder cloud, which overlies a dense avalanche. They can exceed speeds of 300 kilometers per hour (190 mph), and masses of 10,000,000 tonnes (9,800,000 long tons; 11,000,000 short tons); their flows can travel long distances along flat valley bottoms and even uphill for short distances.</li> <li>Wet snow avalanches are a low-velocity suspension of snow and water, with the flow confined to the surface of the pathway.<a href="#cite_note-McClung_2006-60">[60]</a> The low speed of travel is due to the friction between the sliding surface of the pathway and the water saturated flow. Despite the low speed of travel (~10 to 40 kilometers per hour (6 to 25 mph)), wet snow avalanches are capable of generating powerful destructive forces, due to the large mass, and density.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Melting">Melting</h3></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:1997_Red_River_Flood_Grand_Forks.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/93/1997_Red_River_Flood_Grand_Forks.jpg/220px-1997_Red_River_Flood_Grand_Forks.jpg" decoding="async" width="220" height="174" class="mw-file-element" data-file-width="1500" data-file-height="1188"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 174px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/9/93/1997_Red_River_Flood_Grand_Forks.jpg/220px-1997_Red_River_Flood_Grand_Forks.jpg" data-width="220" data-height="174" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/93/1997_Red_River_Flood_Grand_Forks.jpg/330px-1997_Red_River_Flood_Grand_Forks.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/93/1997_Red_River_Flood_Grand_Forks.jpg/440px-1997_Red_River_Flood_Grand_Forks.jpg 2x" data-class="mw-file-element"> </a><figcaption>Snowmelt-induced flooding of the <a href="/wiki/Red_River_of_the_North" title="Red River of the North">Red River of the North</a> in <a href="/wiki/1997_Red_River_flood" title="1997 Red River flood">1997</a></figcaption></figure> Many rivers originating in mountainous or high-latitude regions receive a significant portion of their flow from snowmelt. This often makes the river's flow highly seasonal resulting in periodic <a href="/wiki/Flooding" class="mw-redirect" title="Flooding">flooding</a><a href="#cite_note-Howard_Perlman-61">[61]</a> during the spring months and at least in dry mountainous regions like the mountain West of the US or most of <a href="/wiki/Iran" title="Iran">Iran</a> and <a href="/wiki/Afghanistan" title="Afghanistan">Afghanistan</a>, very low flow for the rest of the year. In contrast, if much of the melt is from <a href="/wiki/Glaciated" class="mw-redirect" title="Glaciated">glaciated</a> or nearly glaciated areas, the melt continues through the warm season, with peak flows occurring in mid to late summer.<a href="#cite_note-62">[62]</a> <div class="mw-heading mw-heading3"><h3 id="Glaciers">Glaciers</h3></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Glacier" title="Glacier">Glacier</a></div> Glaciers form where the accumulation of snow and ice exceeds ablation. The area in which an alpine glacier forms is called a cirque (corrie or cwm), a typically armchair-shaped geological feature, which collects snow and where the snowpack compacts under the weight of successive layers of accumulating snow, forming névé. Further crushing of the individual snow crystals and reduction of entrapped air in the snow turns it into glacial ice. This glacial ice will fill the cirque until it overflows through a geological weakness or an escape route, such as the gap between two mountains. When the mass of snow and ice is sufficiently thick, it begins to move due to a combination of surface slope, gravity and pressure. On steeper slopes, this can occur with as little as 15 m (49 ft) of snow-ice.<a href="#cite_note-Snowenclyclopedia-1">[1]</a> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(5)"><h2 id="Science">Science</h2></div><section class="mf-section-5 collapsible-block" id="mf-section-5"> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Snow_science" title="Snow science">Snow science</a></div> Scientists study snow at a wide variety of scales that include the <a href="/wiki/Physics" title="Physics">physics</a> of <a href="/wiki/Chemical_bonds" class="mw-redirect" title="Chemical bonds">chemical bonds</a> and <a href="/wiki/Cloud_physics" title="Cloud physics">clouds</a>; the distribution, accumulation, metamorphosis, and ablation of snowpacks; and the contribution of snowmelt to river <a href="/wiki/Hydraulics" title="Hydraulics">hydraulics</a> and ground <a href="/wiki/Hydrology" title="Hydrology">hydrology</a>. In doing so, they employ a variety of instruments to observe and measure the phenomena studied. Their findings contribute to knowledge applied by <a href="/wiki/Engineer" title="Engineer">engineers</a>, who adapt vehicles and structures to snow, by <a href="/wiki/Agronomist" class="mw-redirect" title="Agronomist">agronomists</a>, who address the availability of snowmelt to <a href="/wiki/Agriculture" title="Agriculture">agriculture</a>, and those, who design equipment for sporting activities on snow. Scientists develop and others employ snow classification systems that describe its physical properties at scales ranging from the individual crystal to the aggregated snowpack. A sub-specialty is <a href="/wiki/Avalanche" title="Avalanche">avalanches</a>, which are of concern to engineers and outdoors sports people, alike. Snow science addresses how snow forms, its distribution, and processes affecting how snowpacks change over time. Scientists improve storm forecasting, study global snow cover and its effect on climate, glaciers, and water supplies around the world. The study includes physical properties of the material as it changes, bulk properties of in-place snow packs, and the aggregate properties of regions with snow cover. In doing so, they employ on-the-ground physical measurement techniques to establish <a href="/wiki/Ground_truth" title="Ground truth">ground truth</a> and <a href="/wiki/Remote_sensing" title="Remote sensing">remote sensing</a> techniques to develop understanding of snow-related processes over large areas.<a href="#cite_note-63">[63]</a> <div class="mw-heading mw-heading3"><h3 id="Measurement_and_classification">Measurement and classification</h3></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Classifications_of_snow" title="Classifications of snow">Classifications of snow</a></div> In the field snow scientists often excavate a snow pit within which to make basic measurements and observations. Observations can describe features caused by wind, water percolation, or snow unloading from trees. Water percolation into a snowpack can create flow fingers and ponding or flow along capillary barriers, which can refreeze into horizontal and vertical solid ice formations within the snowpack. Among the measurements of the properties of snowpacks that the International Classification for Seasonal Snow on the Ground includes are: snow height, snow water equivalent, snow strength, and extent of snow cover. Each has a designation with code and detailed description. The classification extends the prior classifications of Nakaya and his successors to related types of precipitation and are quoted in the following table:<a href="#cite_note-Classificationonground-4">[4]</a> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Taku_glacier_firn_ice_sampling.png" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Taku_glacier_firn_ice_sampling.png/220px-Taku_glacier_firn_ice_sampling.png" decoding="async" width="220" height="149" class="mw-file-element" data-file-width="519" data-file-height="352"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 149px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Taku_glacier_firn_ice_sampling.png/220px-Taku_glacier_firn_ice_sampling.png" data-width="220" data-height="149" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Taku_glacier_firn_ice_sampling.png/330px-Taku_glacier_firn_ice_sampling.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e9/Taku_glacier_firn_ice_sampling.png/440px-Taku_glacier_firn_ice_sampling.png 2x" data-class="mw-file-element"> </a><figcaption>Snow pit on the surface of a glacier, profiling snow properties where the snow becomes increasingly dense with depth as it turns to ice</figcaption></figure> <table class="wikitable"> <caption>Frozen precipitation particles, related to snow crystals </caption> <tbody><tr> <th>Subclass </th> <th>Shape </th> <th>Physical process </th></tr> <tr> <td><a href="/wiki/Graupel" title="Graupel">Graupel</a> </td> <td>Heavily rimed particles, spherical, conical, hexagonal or irregular in shape </td> <td>Heavy riming of particles by accretion of supercooled water droplets </td></tr> <tr> <td><a href="/wiki/Hail" title="Hail">Hail</a> </td> <td>Laminar internal structure, translucent or milky glazed surface </td> <td>Growth by accretion of supercooled water, size: >5 mm </td></tr> <tr> <td><a href="/wiki/Ice_pellets" title="Ice pellets">Ice pellets</a> </td> <td>Transparent, mostly small spheroids </td> <td>Freezing of raindrops or refreezing of largely melted snow crystals or snowflakes (sleet). Graupel or snow pellets encased in thin ice layer (small hail). Size: both 5 mm </td></tr> <tr> <td><a href="/wiki/Hard_rime" class="mw-redirect" title="Hard rime">Rime</a> </td> <td>Irregular deposits or longer cones and needles pointing into the wind </td> <td>Accretion of small, supercooled fog droplets frozen in place. Thin breakable crust forms on snow surface if process continues long enough. </td></tr></tbody></table> All are formed in cloud, except for rime, which forms on objects exposed to supercooled moisture. It also has a more extensive classification of deposited snow than those that pertain to airborne snow. The categories include both natural and man-made snow types, descriptions of snow crystals as they metamorphose and melt, the development of hoar frost in the snow pack and the formation of ice therein. Each such layer of a snowpack differs from the adjacent layers by one or more characteristics that describe its microstructure or density, which together define the snow type, and other physical properties. Thus, at any one time, the type and state of the snow forming a layer have to be defined because its physical and mechanical properties depend on them. Physical properties include microstructure, grain size and shape, snow density, liquid water content, and temperature.<a href="#cite_note-Classificationonground-4">[4]</a> When it comes to measuring snow cover on the ground, typically three variables are measured: the snow cover extent (SCE) — the land area covered by snow, snow cover duration (SD) — how long a particular area is covered by snow, and the snow accumulation, often expressed as snow water equivalent (SWE), which expresses how much water the snow would be if it were all melted: this last one is a measurement of the volume of the snowpack.<a href="#cite_note-:AR6-64">[64]</a> To measure these variables a variety of techniques are used: surface observations, <a href="/wiki/Remote_sensing" title="Remote sensing">remote sensing</a>, <a href="/wiki/Land_surface_models_(climate)" title="Land surface models (climate)">land surface models</a> and <a href="/wiki/Atmospheric_reanalysis" title="Atmospheric reanalysis">reanalysis products</a>. These techniques are often combined to form the most complete datasets.<a href="#cite_note-:AR6-64">[64]</a> <div class="mw-heading mw-heading3"><h3 id="Satellite_data">Satellite data</h3></div> <a href="/wiki/Remote_sensing" title="Remote sensing">Remote sensing</a> of snowpacks with satellites and other platforms typically includes multi-spectral collection of imagery.<a href="#cite_note-65">[65]</a> Multi-faceted interpretation of the data obtained allows inferences about what is observed. The science behind these remote observations has been verified with ground-truth studies of the actual conditions.<a href="#cite_note-Snowenclyclopedia-1">[1]</a><a href="#cite_note-66">[66]</a> Satellite observations record a decrease in snow-covered areas since the 1960s, when satellite observations began. In some regions such as China, a trend of increasing snow cover was observed from 1978 to 2006. These changes are attributed to global climate change, which may lead to earlier melting and less coverage area. In some areas, snow depth increases because of higher temperatures in latitudes north of 40°. For the Northern Hemisphere as a whole the mean monthly snow-cover extent has been decreasing by 1.3% per decade.<a href="#cite_note-Review-67">[67]</a> The most frequently used methods to map and measure snow extent, snow depth and snow water equivalent employ multiple inputs on the visible–infrared spectrum to deduce the presence and properties of snow. The National Snow and Ice Data Center (NSIDC) uses the reflectance of visible and infrared radiation to calculate a normalized difference snow index, which is a ratio of radiation parameters that can distinguish between clouds and snow. Other researchers have developed decision trees, employing the available data to make more accurate assessments. One challenge to this assessment is where snow cover is patchy, for example during periods of accumulation or ablation and also in forested areas. Cloud cover inhibits optical sensing of surface reflectance, which has led to other methods for estimating ground conditions underneath clouds. For hydrological models, it is important to have continuous information about the snow cover. Passive microwave sensors are especially valuable for temporal and spatial continuity because they can map the surface beneath clouds and in darkness. When combined with reflective measurements, passive microwave sensing greatly extends the inferences possible about the snowpack.<a href="#cite_note-Review-67">[67]</a> Satellite measurements show that snow cover has been decreasing in many areas of the world since 1978.<a href="#cite_note-:AR6-64">[64]</a> <div class="mw-heading mw-heading3"><h3 id="Models">Models</h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Watercyclesummary.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/Watercyclesummary.jpg/220px-Watercyclesummary.jpg" decoding="async" width="220" height="150" class="mw-file-element" data-file-width="729" data-file-height="498"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 150px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/Watercyclesummary.jpg/220px-Watercyclesummary.jpg" data-width="220" data-height="150" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/19/Watercyclesummary.jpg/330px-Watercyclesummary.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/19/Watercyclesummary.jpg/440px-Watercyclesummary.jpg 2x" data-class="mw-file-element"> </a><figcaption>Snowfall and snowmelt are parts of the Earth's water cycle.</figcaption></figure> Snow science often leads to predictive models that include snow deposition, snow melt, and snow hydrology—elements of the Earth's <a href="/wiki/Water_cycle" title="Water cycle">water cycle</a>—which help describe <a href="/wiki/Global_climate_change" class="mw-redirect" title="Global climate change">global climate change</a>.<a href="#cite_note-Snowenclyclopedia-1">[1]</a> <a href="/wiki/Climate_model" title="Climate model">Global climate change models</a> (GCMs) incorporate snow as a factor in their calculations. Some important aspects of snow cover include its <a href="/wiki/Albedo" title="Albedo">albedo</a> (reflectivity of incident radiation, including light) and insulating qualities, which slow the rate of seasonal melting of sea ice. As of 2011, the melt phase of GCM snow models were thought to perform poorly in regions with complex factors that regulate snow melt, such as vegetation cover and terrain. These models typically derive snow water equivalent (SWE) in some manner from satellite observations of snow cover.<a href="#cite_note-Snowenclyclopedia-1">[1]</a> The International Classification for Seasonal Snow on the Ground defines SWE as "the depth of water that would result if the mass of snow melted completely".<a href="#cite_note-Classificationonground-4">[4]</a> Given the importance of snowmelt to agriculture, hydrological runoff models that include snow in their predictions address the phases of accumulating snowpack, melting processes, and distribution of the meltwater through stream networks and into the groundwater. Key to describing the melting processes are solar heat flux, ambient temperature, wind, and precipitation. Initial snowmelt models used a degree-day approach that emphasized the temperature difference between the air and the snowpack to compute snow water equivalent, SWE. More recent models use an energy balance approach that take into account the following factors to compute Qm, the energy available for melt. This requires measurement of an array of snowpack and environmental factors to compute six heat flow mechanisms that contribute to Qm.<a href="#cite_note-Snowenclyclopedia-1">[1]</a> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(6)"><h2 id="Effects_on_civilization">Effects on civilization</h2></div><section class="mf-section-6 collapsible-block" id="mf-section-6"> Snow routinely affects civilization in four major areas, transportation, agriculture, structures, and sports. Most transportation modes are impeded by snow on the travel surface. Agriculture often relies on snow as a source of seasonal moisture. Structures may fail under snow loads. Humans find a wide variety of recreational activities in snowy landscapes. It also affects the conduct of warfare. <div class="mw-heading mw-heading3"><h3 id="Transportation">Transportation</h3></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Snowplow" title="Snowplow">Snowplow</a></div> Snow affects the rights of way of highways, airfields and railroads. The <a href="/wiki/Snowplow" title="Snowplow">snowplow</a> is common to all workers, though roadways take anti-icing chemicals to prevent bonding of ice and airfields may not; railroads rely on abrasives for track traction. <div class="mw-heading mw-heading4"><h4 id="Highway">Highway</h4></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Cars_covered_in_Snow_on_Lake_Shore_Drive_Chicago_Feb_2_2011_storm.JPG" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Cars_covered_in_Snow_on_Lake_Shore_Drive_Chicago_Feb_2_2011_storm.JPG/220px-Cars_covered_in_Snow_on_Lake_Shore_Drive_Chicago_Feb_2_2011_storm.JPG" decoding="async" width="220" height="103" class="mw-file-element" data-file-width="2589" data-file-height="1214"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 103px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Cars_covered_in_Snow_on_Lake_Shore_Drive_Chicago_Feb_2_2011_storm.JPG/220px-Cars_covered_in_Snow_on_Lake_Shore_Drive_Chicago_Feb_2_2011_storm.JPG" data-width="220" data-height="103" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/72/Cars_covered_in_Snow_on_Lake_Shore_Drive_Chicago_Feb_2_2011_storm.JPG/330px-Cars_covered_in_Snow_on_Lake_Shore_Drive_Chicago_Feb_2_2011_storm.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/72/Cars_covered_in_Snow_on_Lake_Shore_Drive_Chicago_Feb_2_2011_storm.JPG/440px-Cars_covered_in_Snow_on_Lake_Shore_Drive_Chicago_Feb_2_2011_storm.JPG 2x" data-class="mw-file-element"> </a><figcaption>Traffic stranded in a <a href="/wiki/2011_Groundhog_Day_blizzard" title="2011 Groundhog Day blizzard">2011 Chicago snowstorm</a>.</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Snowy_Higddhway_4012.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Snowy_Higddhway_4012.jpg/220px-Snowy_Higddhway_4012.jpg" decoding="async" width="220" height="138" class="mw-file-element" data-file-width="1920" data-file-height="1200"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 138px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Snowy_Higddhway_4012.jpg/220px-Snowy_Higddhway_4012.jpg" data-width="220" data-height="138" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Snowy_Higddhway_4012.jpg/330px-Snowy_Higddhway_4012.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c6/Snowy_Higddhway_4012.jpg/440px-Snowy_Higddhway_4012.jpg 2x" data-class="mw-file-element"> </a><figcaption>Reduced visibility on <a href="/wiki/Ontario_Highway_401" title="Ontario Highway 401">Ontario Highway 401</a> in Toronto due to a <a href="/wiki/Snowsquall" class="mw-redirect" title="Snowsquall">snowsquall</a>.</figcaption></figure> In the late 20th century, an estimated $2 billion was spent annually in North America on roadway winter maintenance, owing to snow and other winter weather events, according to a 1994 report by Kuemmel. The study surveyed the practices of jurisdictions within 44 US states and nine Canadian provinces. It assessed the policies, practices, and equipment used for winter maintenance. It found similar practices and progress to be prevalent in Europe.<a href="#cite_note-Kuemmel-68">[68]</a> The dominant effect of snow on vehicle contact with the road is diminished friction. This can be improved with the use of <a href="/wiki/Snow_tire" title="Snow tire">snow tires</a>, which have a tread designed to compact snow in a manner that enhances traction. The key to maintaining a roadway that can accommodate traffic during and after a snow event is an effective anti-icing program that employs both chemicals and <a href="/wiki/Snowplow" title="Snowplow">plowing</a>.<a href="#cite_note-Kuemmel-68">[68]</a> The <a href="/wiki/Federal_Highway_Administration" title="Federal Highway Administration">Federal Highway Administration</a> Manual of Practice for an Effective Anti-icing Program emphasizes "anti-icing" procedures that prevent the bonding of snow and ice to the road. Key aspects of the practice include: understanding anti-icing in light of the level of service to be achieved on a given roadway, the climatic conditions to be encountered, and the different roles of deicing, anti-icing, and abrasive materials and applications, and employing anti-icing "toolboxes", one for operations, one for decision-making and another for personnel. The elements to the toolboxes are:<a href="#cite_note-FHWA-69">[69]</a> <ul><li>Operations – Addresses the application of solid and liquid chemicals, using various techniques, including prewetting of chloride-salts. It also addresses plowing capability, including types of snowplows and blades used.</li> <li>Decision-making – Combines weather forecast information with road information to assess the upcoming needs for application of assets and the evaluation of treatment effectiveness with operations underway.</li> <li>Personnel – Addresses training and deployment of staff to effectively execute the anti-icing program, using the appropriate materials, equipment and procedures.</li></ul> The manual offers matrices that address different types of snow and the rate of snowfall to tailor applications appropriately and efficiently. <a href="/wiki/Snow_fence" title="Snow fence">Snow fences</a>, constructed upwind of roadways control snow drifting by causing windblown, drifting snow to accumulate in a desired place. They are also used on railways. Additionally, farmers and ranchers use snow fences to create drifts in basins for a ready supply of water in the spring.<a href="#cite_note-70">[70]</a><a href="#cite_note-71">[71]</a> <div class="mw-heading mw-heading4"><h4 id="Aviation">Aviation</h4></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Ice_protection_system" title="Ice protection system">Ice protection system</a></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:2008_aircraft_deicing_at_gate.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/2008_aircraft_deicing_at_gate.jpg/220px-2008_aircraft_deicing_at_gate.jpg" decoding="async" width="220" height="165" class="mw-file-element" data-file-width="2816" data-file-height="2112"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 165px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/2008_aircraft_deicing_at_gate.jpg/220px-2008_aircraft_deicing_at_gate.jpg" data-width="220" data-height="165" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/13/2008_aircraft_deicing_at_gate.jpg/330px-2008_aircraft_deicing_at_gate.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/13/2008_aircraft_deicing_at_gate.jpg/440px-2008_aircraft_deicing_at_gate.jpg 2x" data-class="mw-file-element"> </a><figcaption>Deicing an aircraft during a snow event</figcaption></figure> In order to keep airports open during winter storms, runways and taxiways require snow removal. Unlike roadways, where chloride chemical treatment is common to prevent snow from bonding to the pavement surface, such chemicals are typically banned from airports because of their strong corrosive effect on aluminum aircraft. Consequently, mechanical brushes are often used to complement the action of snow plows. Given the width of runways on airfields that handle large aircraft, vehicles with large plow blades, an echelon of plow vehicles or <a href="/wiki/Rotary_snowplow" title="Rotary snowplow">rotary snowplows</a> are used to clear snow on runways and taxiways. Terminal aprons may require 6 hectares (15 acres) or more to be cleared.<a href="#cite_note-Vinson-72">[72]</a> Properly equipped aircraft are able to fly through snowstorms under <a href="/wiki/Instrument_flight_rules" title="Instrument flight rules">instrument flight rules</a>. Prior to takeoff, during snowstorms they require <a href="/wiki/Deicing_fluid" class="mw-redirect" title="Deicing fluid">deicing fluid</a> to prevent accumulation and freezing of snow and other precipitation on wings and fuselages, which may compromise the safety of the aircraft and its occupants.<a href="#cite_note-73">[73]</a> In flight, aircraft rely on a variety of mechanisms to avoid rime and other types of icing in clouds,<a href="#cite_note-74">[74]</a> these include pulsing <a href="/wiki/Deicing_boot" title="Deicing boot">pneumatic boots</a>, electro-thermal areas that generate heat, and fluid deicers that bleed onto the surface.<a href="#cite_note-75">[75]</a> <div class="mw-heading mw-heading4"><h4 id="Rail">Rail</h4></div> Railroads have traditionally employed two types of snow plows for clearing track, the <a href="/wiki/Wedge_plow" title="Wedge plow">wedge plow</a>, which casts snow to both sides, and the <a href="/wiki/Rotary_snowplow" title="Rotary snowplow">rotary snowplow</a>, which is suited for addressing heavy snowfall and casting snow far to one side or the other. Prior to the invention of the rotary snowplow ca. 1865, it required multiple <a href="/wiki/Locomotive" title="Locomotive">locomotives</a> to drive a wedge plow through deep snow. Subsequent to clearing the track with such plows, a "flanger" is used to clear snow from between the rails that are below the reach of the other types of plow. Where icing may affect the steel-to-steel contact of locomotive wheels on track, abrasives (typically sand) have been used to provide traction on steeper uphills.<a href="#cite_note-76">[76]</a> Railroads employ <a href="/wiki/Snow_shed" class="mw-redirect" title="Snow shed">snow sheds</a>—structures that cover the track—to prevent the accumulation of heavy snow or avalanches to cover tracks in snowy mountainous areas, such as the <a href="/wiki/Alps" title="Alps">Alps</a> and the <a href="/wiki/Rocky_Mountains" title="Rocky Mountains">Rocky Mountains</a>.<a href="#cite_note-77">[77]</a> <ul class="gallery mw-gallery-packed"> <li class="gallerycaption">Snowplows for different transportation modes</li> <li class="gallerybox" style="width: 202px"> <div class="thumb" style="width: 200px;"><a href="/wiki/File:TowPLow_front_view2.JPG" class="mw-file-description" title="Trucks plowing snow on a highway in Missouri"><noscript><img alt="Trucks plowing snow on a highway in Missouri" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4b/TowPLow_front_view2.JPG/300px-TowPLow_front_view2.JPG" decoding="async" width="200" height="150" class="mw-file-element" data-file-width="3072" data-file-height="2304"></noscript><span class="lazy-image-placeholder" style="width: 200px;height: 150px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4b/TowPLow_front_view2.JPG/300px-TowPLow_front_view2.JPG" data-alt="Trucks plowing snow on a highway in Missouri" data-width="200" data-height="150" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4b/TowPLow_front_view2.JPG/451px-TowPLow_front_view2.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4b/TowPLow_front_view2.JPG/600px-TowPLow_front_view2.JPG 2x" data-class="mw-file-element"> </a></div> <div class="gallerytext">Trucks plowing snow on a highway in <a href="/wiki/Missouri" title="Missouri">Missouri</a></div> </li> <li class="gallerybox" style="width: 280px"> <div class="thumb" style="width: 278px;"><a href="/wiki/File:Winter_Operations_@_Brussels_Airport_January_2013_(8387468508).jpg" class="mw-file-description" title="Airport snow-clearing operations include plowing and brushing"><noscript><img alt="Airport snow-clearing operations include plowing and brushing" src="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Winter_Operations_%40_Brussels_Airport_January_2013_%288387468508%29.jpg/417px-Winter_Operations_%40_Brussels_Airport_January_2013_%288387468508%29.jpg" decoding="async" width="278" height="150" class="mw-file-element" data-file-width="4775" data-file-height="2576"></noscript><span class="lazy-image-placeholder" style="width: 278px;height: 150px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Winter_Operations_%40_Brussels_Airport_January_2013_%288387468508%29.jpg/417px-Winter_Operations_%40_Brussels_Airport_January_2013_%288387468508%29.jpg" data-alt="Airport snow-clearing operations include plowing and brushing" data-width="278" data-height="150" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Winter_Operations_%40_Brussels_Airport_January_2013_%288387468508%29.jpg/627px-Winter_Operations_%40_Brussels_Airport_January_2013_%288387468508%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/eb/Winter_Operations_%40_Brussels_Airport_January_2013_%288387468508%29.jpg/835px-Winter_Operations_%40_Brussels_Airport_January_2013_%288387468508%29.jpg 2x" data-class="mw-file-element"> </a></div> <div class="gallerytext">Airport snow-clearing operations include plowing and brushing</div> </li> <li class="gallerybox" style="width: 245.33333333333px"> <div class="thumb" style="width: 243.33333333333px;"><a href="/wiki/File:RhB_ABe_8-12_Allegra_mit_Spurpflug_bei_Ospizio_Bernina.jpg" class="mw-file-description" title="Swiss low-profile, train-mounted snowplow"><noscript><img alt="Swiss low-profile, train-mounted snowplow" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/RhB_ABe_8-12_Allegra_mit_Spurpflug_bei_Ospizio_Bernina.jpg/365px-RhB_ABe_8-12_Allegra_mit_Spurpflug_bei_Ospizio_Bernina.jpg" decoding="async" width="244" height="150" class="mw-file-element" data-file-width="5430" data-file-height="3352"></noscript><span class="lazy-image-placeholder" style="width: 244px;height: 150px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/RhB_ABe_8-12_Allegra_mit_Spurpflug_bei_Ospizio_Bernina.jpg/365px-RhB_ABe_8-12_Allegra_mit_Spurpflug_bei_Ospizio_Bernina.jpg" data-alt="Swiss low-profile, train-mounted snowplow" data-width="244" data-height="150" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/RhB_ABe_8-12_Allegra_mit_Spurpflug_bei_Ospizio_Bernina.jpg/548px-RhB_ABe_8-12_Allegra_mit_Spurpflug_bei_Ospizio_Bernina.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/21/RhB_ABe_8-12_Allegra_mit_Spurpflug_bei_Ospizio_Bernina.jpg/729px-RhB_ABe_8-12_Allegra_mit_Spurpflug_bei_Ospizio_Bernina.jpg 2x" data-class="mw-file-element"> </a></div> <div class="gallerytext">Swiss low-profile, train-mounted snowplow</div> </li> </ul> <div class="mw-heading mw-heading4"><h4 id="Construction">Construction</h4></div> Snow can be compacted to form a <a href="/wiki/Snow_road" title="Snow road">snow road</a> and be part of a <a href="/wiki/Winter_road" title="Winter road">winter road route</a> for vehicles to access isolated communities or construction projects during the winter.<a href="#cite_note-Abele-78">[78]</a> Snow can also be used to provide the supporting structure and surface for a runway, as with the <a href="/wiki/Phoenix_Airfield" title="Phoenix Airfield">Phoenix Airfield</a> in Antarctica. The snow-compacted runway is designed to withstand approximately 60 wheeled flights of heavy-lift military aircraft a year.<a href="#cite_note-usap4212-79">[79]</a> <div class="mw-heading mw-heading3"><h3 id="Agriculture">Agriculture</h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Indus.A2002274.0610.1km.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bb/Indus.A2002274.0610.1km.jpg/220px-Indus.A2002274.0610.1km.jpg" decoding="async" width="220" height="288" class="mw-file-element" data-file-width="1300" data-file-height="1700"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 288px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/b/bb/Indus.A2002274.0610.1km.jpg/220px-Indus.A2002274.0610.1km.jpg" data-width="220" data-height="288" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bb/Indus.A2002274.0610.1km.jpg/330px-Indus.A2002274.0610.1km.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bb/Indus.A2002274.0610.1km.jpg/440px-Indus.A2002274.0610.1km.jpg 2x" data-class="mw-file-element"> </a><figcaption>Satellite view of the <a href="/wiki/Indus_River_Basin" class="mw-redirect" title="Indus River Basin">Indus River Basin</a>, showing snow in the mountain ranges—including the Himalayas—which feed the Indus river and its tributaries, and agricultural areas in eastern <a href="/wiki/Pakistan" title="Pakistan">Pakistan</a> and northwestern <a href="/wiki/India" title="India">India</a> that draw on them for irrigation.</figcaption></figure> Snowfall can be beneficial to agriculture by serving as a <a href="/wiki/Thermal_insulation" title="Thermal insulation">thermal insulator</a>, conserving the heat of the Earth and protecting <a href="/wiki/Agriculture" title="Agriculture">crops</a> from subfreezing weather. Some agricultural areas depend on an accumulation of snow during winter that will melt gradually in spring, providing water for crop growth, both directly and via runoff through streams and rivers, which supply irrigation canals.<a href="#cite_note-Snowenclyclopedia-1">[1]</a> The following are examples of rivers that rely on meltwater from glaciers or seasonal snowpack as an important part of their flow on which irrigation depends: the <a href="/wiki/Ganges" title="Ganges">Ganges</a>, many of whose tributaries rise in the <a href="/wiki/Himalayas" title="Himalayas">Himalayas</a> and which provide much irrigation in northeast <a href="/wiki/India" title="India">India</a>,<a href="#cite_note-80">[80]</a> the <a href="/wiki/Indus_River" title="Indus River">Indus River</a>, which rises in <a href="/wiki/Tibet" title="Tibet">Tibet</a><a href="#cite_note-81">[81]</a> and provides irrigation water to <a href="/wiki/Pakistan" title="Pakistan">Pakistan</a> from rapidly retreating Tibetan glaciers,<a href="#cite_note-82">[82]</a> and the <a href="/wiki/Colorado_River" title="Colorado River">Colorado River</a>, which receives much of its water from seasonal snowpack in the <a href="/wiki/Rocky_Mountains" title="Rocky Mountains">Rocky Mountains</a><a href="#cite_note-USGSrivers-83">[83]</a> and provides irrigation water to some 4 million acres (1.6 million hectares).<a href="#cite_note-84">[84]</a> <div class="mw-heading mw-heading3"><h3 id="Structures">Structures</h3></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Snow_in_Grindelwald.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/Snow_in_Grindelwald.jpg/220px-Snow_in_Grindelwald.jpg" decoding="async" width="220" height="169" class="mw-file-element" data-file-width="3440" data-file-height="2645"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 169px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/Snow_in_Grindelwald.jpg/220px-Snow_in_Grindelwald.jpg" data-width="220" data-height="169" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/81/Snow_in_Grindelwald.jpg/330px-Snow_in_Grindelwald.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/81/Snow_in_Grindelwald.jpg/440px-Snow_in_Grindelwald.jpg 2x" data-class="mw-file-element"> </a><figcaption>Extreme snow accumulation on building roofs</figcaption></figure> Snow is an important consideration for loads on structures. To address these, European countries employ Eurocode 1: Actions on structures - Part 1-3: General actions - Snow loads.<a href="#cite_note-Eurocode1-85">[85]</a> In North America, ASCE Minimum Design Loads for Buildings and Other Structures gives guidance on snow loads.<a href="#cite_note-ASCE7-86">[86]</a> Both standards employ methods that translate maximum expected ground snow loads onto design loads for roofs. <div class="mw-heading mw-heading4"><h4 id="Roofs">Roofs</h4></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Ice_dam_and_roof_leakage.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6e/Ice_dam_and_roof_leakage.jpg/220px-Ice_dam_and_roof_leakage.jpg" decoding="async" width="220" height="283" class="mw-file-element" data-file-width="2493" data-file-height="3206"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 283px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6e/Ice_dam_and_roof_leakage.jpg/220px-Ice_dam_and_roof_leakage.jpg" data-width="220" data-height="283" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/6e/Ice_dam_and_roof_leakage.jpg/330px-Ice_dam_and_roof_leakage.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/6e/Ice_dam_and_roof_leakage.jpg/440px-Ice_dam_and_roof_leakage.jpg 2x" data-class="mw-file-element"> </a><figcaption>Icings resulting from meltwater at the bottom of the snow pack on the roof, flowing and refreezing at the eave as icicles and from leaking into the wall via an ice dam.</figcaption></figure> Snow loads and icings are two principal issues for roofs. Snow loads are related to the climate in which a structure is sited. Icings are usually a result of the building or structure generating heat that melts the snow that is on it. Snow loads – The Minimum Design Loads for Buildings and Other Structures gives guidance on how to translate the following factors into roof snow loads:<a href="#cite_note-ASCE7-86">[86]</a> <ul><li>Ground snow loads</li> <li>Exposure of the roof</li> <li>Thermal properties of the roof</li> <li>Shape of the roof</li> <li>Drifting</li> <li>Importance of the building</li></ul> It gives tables for ground snow loads by region and a methodology for computing ground snow loads that may vary with elevation from nearby, measured values. The Eurocode 1 uses similar methodologies, starting with ground snow loads that are tabulated for portions of Europe.<a href="#cite_note-Eurocode1-85">[85]</a> Icings – Roofs must also be designed to avoid <a href="/wiki/Ice_dam_(roof)" title="Ice dam (roof)">ice dams</a>, which result from meltwater running under the snow on the roof and freezing at the eave. Ice dams on roofs form when accumulated snow on a sloping roof melts and flows down the roof, under the insulating blanket of snow, until it reaches below freezing temperature air, typically at the <a href="/wiki/Eaves" title="Eaves">eaves</a>. When the meltwater reaches the freezing air, ice accumulates, forming a dam, and snow that melts later cannot drain properly through the dam.<a href="#cite_note-Paul-87">[87]</a> Ice dams may result in <a href="/wiki/Water_damage" title="Water damage">damaged</a> building materials or in damage or injury when the ice dam falls off or from attempts to remove ice dams. The melting results from heat passing through the roof under the highly insulating layer of snow.<a href="#cite_note-88">[88]</a><a href="#cite_note-Hansen-89">[89]</a> <div class="mw-heading mw-heading4"><h4 id="Utility_lines">Utility lines</h4></div> In areas with trees, utility distribution lines on poles are less susceptible to snow loads than they are subject to damage from trees falling on them, felled by heavy, wet snow.<a href="#cite_note-90">[90]</a> Elsewhere, snow can accrete on power lines as "sleeves" of rime ice. Engineers design for such loads, which are measured in kg/m (lb/ft) and power companies have forecasting systems that anticipate types of weather that may cause such accretions. Rime ice may be removed manually or by creating a sufficient short circuit in the affected segment of power lines to melt the accretions.<a href="#cite_note-91">[91]</a><a href="#cite_note-92">[92]</a> <div class="mw-heading mw-heading3"><h3 id="Sports_and_recreation">Sports and recreation</h3></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Ski_Famille_-_Family_Ski_Holidays.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/84/Ski_Famille_-_Family_Ski_Holidays.jpg/220px-Ski_Famille_-_Family_Ski_Holidays.jpg" decoding="async" width="220" height="123" class="mw-file-element" data-file-width="1344" data-file-height="751"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 123px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/8/84/Ski_Famille_-_Family_Ski_Holidays.jpg/220px-Ski_Famille_-_Family_Ski_Holidays.jpg" data-width="220" data-height="123" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/84/Ski_Famille_-_Family_Ski_Holidays.jpg/330px-Ski_Famille_-_Family_Ski_Holidays.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/84/Ski_Famille_-_Family_Ski_Holidays.jpg/440px-Ski_Famille_-_Family_Ski_Holidays.jpg 2x" data-class="mw-file-element"> </a><figcaption>Alpine skiing</figcaption></figure> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Winter_sport" class="mw-redirect" title="Winter sport">Winter sport</a></div> Snow figures into many winter sports and forms of recreation, including <a href="/wiki/Skiing" title="Skiing">skiing</a> and <a href="/wiki/Sledding" title="Sledding">sledding</a>. Common examples include <a href="/wiki/Cross-country_skiing" title="Cross-country skiing">cross-country skiing</a>, <a href="/wiki/Alpine_skiing" title="Alpine skiing">Alpine skiing</a>, <a href="/wiki/Snowboarding" title="Snowboarding">snowboarding</a>, <a href="/wiki/Snowshoe" title="Snowshoe">snowshoeing</a>, and <a href="/wiki/Snowmobile" title="Snowmobile">snowmobiling</a>. The design of the equipment used, e.g. skis and snowboards, typically relies on the bearing strength of snow and contends with the <a href="/wiki/Coefficient_of_friction" class="mw-redirect" title="Coefficient of friction">coefficient of friction</a> bearing on snow. Skiing is by far the largest form of winter recreation. As of 1994, of the estimated 65–75 million skiers worldwide, there were approximately 55 million who engaged in <a href="/wiki/Alpine_skiing" title="Alpine skiing">Alpine skiing</a>, the rest engaged in <a href="/wiki/Cross-country_skiing" title="Cross-country skiing">cross-country skiing</a>. Approximately 30 million skiers (of all kinds) were in Europe, 15 million in the US, and 14 million in Japan. As of 1996, there were reportedly 4,500 ski areas, operating 26,000 ski lifts and enjoying 390 million skier visits per year. The preponderant region for downhill skiing was Europe, followed by Japan and the US.<a href="#cite_note-93">[93]</a> Increasingly, ski resorts are relying on <a href="/wiki/Snowmaking" title="Snowmaking">snowmaking</a>, the production of snow by forcing water and pressurized air through a <a href="/wiki/Snowmaking#Snowmaking_guns" title="Snowmaking">snow gun</a> on ski slopes.<a href="#cite_note-94">[94]</a> Snowmaking is mainly used to supplement natural snow at <a href="/wiki/Ski_resort" title="Ski resort">ski resorts</a>.<a href="#cite_note-95">[95]</a> This allows them to improve the reliability of their snow cover and to extend their ski seasons from late autumn to early spring. The production of snow requires low temperatures. The threshold temperature for snowmaking increases as humidity decreases. <a href="/wiki/Wet-bulb_temperature" title="Wet-bulb temperature">Wet-bulb temperature</a> is used as a metric since it takes air temperature and relative humidity into account. Snowmaking is a relatively expensive process in its energy consumption, thereby limiting its use.<a href="#cite_note-96">[96]</a> <a href="/wiki/Ski_wax" title="Ski wax">Ski wax</a> enhances the ability of a ski (or other runner) to slide over snow by reducing its coefficient of friction, which depends on both the properties of the snow and the ski to result in an optimum amount of lubrication from melting the snow by friction with the ski—too little and the ski interacts with solid snow crystals, too much and capillary attraction of meltwater retards the ski. Before a ski can slide, it must overcome the maximum value static friction. Kinetic (or dynamic) friction occurs when the ski is moving over the snow.<a href="#cite_note-Bhavikatti-97">[97]</a> <div class="mw-heading mw-heading3"><h3 id="Warfare">Warfare</h3></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Cold-weather_warfare" title="Cold-weather warfare">Cold-weather warfare</a></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/Ski_warfare" title="Ski warfare">Ski warfare</a></div> Snow affects warfare conducted in winter, alpine environments or at high latitudes. The main factors are impaired visibility for acquiring targets during falling snow, enhanced visibility of targets against snowy backgrounds for targeting, and mobility for both <a href="/wiki/Mechanized_infantry" title="Mechanized infantry">mechanized</a> and <a href="/wiki/Infantry" title="Infantry">infantry</a> troops. Snowfall can severely inhibit the <a href="/wiki/Military_logistics" title="Military logistics">logistics of supplying troops</a>, as well. Snow can also provide cover and fortification against small-arms fire.<a href="#cite_note-chew-98">[98]</a> Noted <a href="/wiki/Winter_warfare" class="mw-redirect" title="Winter warfare">winter warfare</a> campaigns where snow and other factors affected the operations include: <ul><li>The <a href="/wiki/French_invasion_of_Russia" title="French invasion of Russia">French invasion of Russia</a>, where poor traction conditions for ill-shod horses made it difficult for supply wagons to keep up with troops.<a href="#cite_note-99">[99]</a> That campaign was also strongly affected by cold, whereby the retreating army reached <a href="/wiki/Neman_River" class="mw-redirect" title="Neman River">Neman River</a> in December 1812 with only 10,000 of the 420,000 that had set out to invade <a href="/wiki/Russia" title="Russia">Russia</a> in June of the same year.<a href="#cite_note-The_Wordsworth_Pocket_Encyclopedia_p._17-100">[100]</a></li> <li>The <a href="/wiki/Winter_War" title="Winter War">Winter War</a>, an attempt by the <a href="/wiki/Soviet_Union" title="Soviet Union">Soviet Union</a> to take territory in <a href="/wiki/Finland" title="Finland">Finland</a> in late 1939 demonstrated superior winter tactics of the <a href="/wiki/Finnish_Army" title="Finnish Army">Finnish Army</a>, regarding over-snow mobility, <a href="/wiki/Camouflage" title="Camouflage">camouflage</a>, and use of the terrain.<a href="#cite_note-Clemmesen-101">[101]</a></li> <li>The <a href="/wiki/Battle_of_the_Bulge" title="Battle of the Bulge">Battle of the Bulge</a>, a German counteroffensive during <a href="/wiki/World_War_II" title="World War II">World War II</a>, starting December 16, 1944, was marked by heavy snowstorms that hampered allied air support for ground troops, but also impaired German attempts to supply their front lines.<a href="#cite_note-102">[102]</a> On the Eastern Front with the Nazi invasion of Russia in 1941, <a href="/wiki/Operation_Barbarossa" title="Operation Barbarossa">Operation Barbarossa</a>, both Russian and German soldiers had to endure terrible conditions during the <a href="/wiki/Russian_winter" class="mw-redirect" title="Russian winter">Russian winter</a>. While use of <a href="/wiki/Ski_infantry" class="mw-redirect" title="Ski infantry">ski infantry</a> was common in the Red Army, Germany formed only <a href="/wiki/1st_Ski_Division_(Germany)" class="mw-redirect" title="1st Ski Division (Germany)">one division</a> for movement on skis.<a href="#cite_note-Clemmesen-101">[101]</a></li> <li>The <a href="/wiki/Korean_War" title="Korean War">Korean War</a> which lasted from June 25, 1950, until an armistice on July 27, 1953, began when <a href="/wiki/North_Korea" title="North Korea">North Korea</a> invaded <a href="/wiki/South_Korea" title="South Korea">South Korea</a>. Much of the fighting occurred during winter conditions, involving snow,<a href="#cite_note-103">[103]</a> notably during the <a href="/wiki/Battle_of_Chosin_Reservoir" title="Battle of Chosin Reservoir">Battle of Chosin Reservoir</a>, which was a stark example of cold affecting military operations, especially vehicles and weapons.<a href="#cite_note-104">[104]</a></li></ul> <ul class="gallery mw-gallery-packed"> <li class="gallerycaption">Military operations in snow</li> <li class="gallerybox" style="width: 222px"> <div class="thumb" style="width: 220px;"><a href="/wiki/File:Night_Bivouac_of_Great_Army.jpg" class="mw-file-description" title="Bivouac of Napoleon's Grande Armée, during the winter retreat from Moscow"><noscript><img alt="Bivouac of Napoleon's Grande Armée, during the winter retreat from Moscow" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/Night_Bivouac_of_Great_Army.jpg/330px-Night_Bivouac_of_Great_Army.jpg" decoding="async" width="220" height="150" class="mw-file-element" data-file-width="1000" data-file-height="682"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 150px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/Night_Bivouac_of_Great_Army.jpg/330px-Night_Bivouac_of_Great_Army.jpg" data-alt="Bivouac of Napoleon's Grande Armée, during the winter retreat from Moscow" data-width="220" data-height="150" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/79/Night_Bivouac_of_Great_Army.jpg/496px-Night_Bivouac_of_Great_Army.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/79/Night_Bivouac_of_Great_Army.jpg/660px-Night_Bivouac_of_Great_Army.jpg 2x" data-class="mw-file-element"> </a></div> <div class="gallerytext">Bivouac of <a href="/wiki/Napoleon" title="Napoleon">Napoleon</a>'s <a href="/wiki/Grande_Arm%C3%A9e" title="Grande Armée">Grande Armée</a>, during the winter retreat from <a href="/wiki/Moscow" title="Moscow">Moscow</a></div> </li> <li class="gallerybox" style="width: 212.66666666667px"> <div class="thumb" style="width: 210.66666666667px;"><a href="/wiki/File:The_War_in_Finland,_1940_HU55566.jpg" class="mw-file-description" title="Finnish ski troops during the invasion of Finland by the Soviet Union"><noscript><img alt="Finnish ski troops during the invasion of Finland by the Soviet Union" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d2/The_War_in_Finland%2C_1940_HU55566.jpg/316px-The_War_in_Finland%2C_1940_HU55566.jpg" decoding="async" width="211" height="150" class="mw-file-element" data-file-width="5434" data-file-height="3867"></noscript><span class="lazy-image-placeholder" style="width: 211px;height: 150px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d2/The_War_in_Finland%2C_1940_HU55566.jpg/316px-The_War_in_Finland%2C_1940_HU55566.jpg" data-alt="Finnish ski troops during the invasion of Finland by the Soviet Union" data-width="211" data-height="150" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d2/The_War_in_Finland%2C_1940_HU55566.jpg/475px-The_War_in_Finland%2C_1940_HU55566.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d2/The_War_in_Finland%2C_1940_HU55566.jpg/633px-The_War_in_Finland%2C_1940_HU55566.jpg 2x" data-class="mw-file-element"> </a></div> <div class="gallerytext">Finnish ski troops during the invasion of <a href="/wiki/Finland" title="Finland">Finland</a> by the <a href="/wiki/Soviet_Union" title="Soviet Union">Soviet Union</a></div> </li> <li class="gallerybox" style="width: 189.33333333333px"> <div class="thumb" style="width: 187.33333333333px;"><a href="/wiki/File:Army_vehicles_on_a_road_in_Belgium.jpg" class="mw-file-description" title="Army vehicles coping with snow during the Battle of the Bulge of World War II"><noscript><img alt="Army vehicles coping with snow during the Battle of the Bulge of World War II" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Army_vehicles_on_a_road_in_Belgium.jpg/281px-Army_vehicles_on_a_road_in_Belgium.jpg" decoding="async" width="188" height="150" class="mw-file-element" data-file-width="1024" data-file-height="819"></noscript><span class="lazy-image-placeholder" style="width: 188px;height: 150px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Army_vehicles_on_a_road_in_Belgium.jpg/281px-Army_vehicles_on_a_road_in_Belgium.jpg" data-alt="Army vehicles coping with snow during the Battle of the Bulge of World War II" data-width="188" data-height="150" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Army_vehicles_on_a_road_in_Belgium.jpg/423px-Army_vehicles_on_a_road_in_Belgium.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fb/Army_vehicles_on_a_road_in_Belgium.jpg/563px-Army_vehicles_on_a_road_in_Belgium.jpg 2x" data-class="mw-file-element"> </a></div> <div class="gallerytext">Army vehicles coping with snow during the <a href="/wiki/Battle_of_the_Bulge" title="Battle of the Bulge">Battle of the Bulge</a> of <a href="/wiki/World_War_II" title="World War II">World War II</a></div> </li> <li class="gallerybox" style="width: 227.33333333333px"> <div class="thumb" style="width: 225.33333333333px;"><a href="/wiki/File:Cold_Response_DV_dag.jpg" class="mw-file-description" title="Norwegian military preparations during the 2009 Cold Response exercise"><noscript><img alt="Norwegian military preparations during the 2009 Cold Response exercise" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Cold_Response_DV_dag.jpg/338px-Cold_Response_DV_dag.jpg" decoding="async" width="226" height="150" class="mw-file-element" data-file-width="3410" data-file-height="2269"></noscript><span class="lazy-image-placeholder" style="width: 226px;height: 150px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Cold_Response_DV_dag.jpg/338px-Cold_Response_DV_dag.jpg" data-alt="Norwegian military preparations during the 2009 Cold Response exercise" data-width="226" data-height="150" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Cold_Response_DV_dag.jpg/508px-Cold_Response_DV_dag.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Cold_Response_DV_dag.jpg/677px-Cold_Response_DV_dag.jpg 2x" data-class="mw-file-element"> </a></div> <div class="gallerytext">Norwegian military preparations during the 2009 <a href="/wiki/Cold_Response" class="mw-redirect" title="Cold Response">Cold Response</a> exercise</div> </li> <li class="gallerybox" style="width: 228px"> <div class="thumb" style="width: 226px;"><a href="/wiki/File:Navy_Seals_Winter_warfare_at_Mammoth_Mountain,_California,_in_December_2014.jpg" class="mw-file-description" title="United States Navy SEALs training for winter warfare at Mammoth Mountain, California"><noscript><img alt="United States Navy SEALs training for winter warfare at Mammoth Mountain, California" src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Navy_Seals_Winter_warfare_at_Mammoth_Mountain%2C_California%2C_in_December_2014.jpg/339px-Navy_Seals_Winter_warfare_at_Mammoth_Mountain%2C_California%2C_in_December_2014.jpg" decoding="async" width="226" height="150" class="mw-file-element" data-file-width="3696" data-file-height="2456"></noscript><span class="lazy-image-placeholder" style="width: 226px;height: 150px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Navy_Seals_Winter_warfare_at_Mammoth_Mountain%2C_California%2C_in_December_2014.jpg/339px-Navy_Seals_Winter_warfare_at_Mammoth_Mountain%2C_California%2C_in_December_2014.jpg" data-alt="United States Navy SEALs training for winter warfare at Mammoth Mountain, California" data-width="226" data-height="150" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Navy_Seals_Winter_warfare_at_Mammoth_Mountain%2C_California%2C_in_December_2014.jpg/509px-Navy_Seals_Winter_warfare_at_Mammoth_Mountain%2C_California%2C_in_December_2014.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Navy_Seals_Winter_warfare_at_Mammoth_Mountain%2C_California%2C_in_December_2014.jpg/677px-Navy_Seals_Winter_warfare_at_Mammoth_Mountain%2C_California%2C_in_December_2014.jpg 2x" data-class="mw-file-element"> </a></div> <div class="gallerytext"><a href="/wiki/United_States_Navy_SEALs" title="United States Navy SEALs">United States Navy SEALs</a> training for winter warfare at <a href="/wiki/Mammoth_Mountain" title="Mammoth Mountain">Mammoth Mountain</a>, <a href="/wiki/California" title="California">California</a></div> </li> </ul> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(7)"><h2 id="Effects_on_plants_and_animals">Effects on plants and animals</h2></div><section class="mf-section-7 collapsible-block" id="mf-section-7"> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Chlamydomonas_nivalis.jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Chlamydomonas_nivalis.jpg/220px-Chlamydomonas_nivalis.jpg" decoding="async" width="220" height="165" class="mw-file-element" data-file-width="2592" data-file-height="1944"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 165px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Chlamydomonas_nivalis.jpg/220px-Chlamydomonas_nivalis.jpg" data-width="220" data-height="165" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Chlamydomonas_nivalis.jpg/330px-Chlamydomonas_nivalis.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Chlamydomonas_nivalis.jpg/440px-Chlamydomonas_nivalis.jpg 2x" data-class="mw-file-element"> </a><figcaption>Algae, <a href="/wiki/Chlamydomonas_nivalis" title="Chlamydomonas nivalis">Chlamydomonas nivalis</a>, that thrive in snow form red areas in the <a href="/wiki/Suncup_(snow)" title="Suncup (snow)">suncups</a> on this snow surface</figcaption></figure> Plants and animals endemic to snowbound areas develop ways to adapt. Among the adaptive mechanisms for plants are freeze-adaptive chemistry,<a href="#cite_note-105">[105]</a> dormancy, seasonal dieback, survival of seeds; and for animals are hibernation, insulation, anti-freeze chemistry, storing food, drawing on reserves from within the body, and clustering for mutual heat.<a href="#cite_note-SnowEcology-106">[106]</a> Snow interacts with vegetation in two principal ways, vegetation can influence the deposition and retention of snow and, conversely, the presence of snow can affect the distribution and growth of vegetation. Tree branches, especially of <a href="/wiki/Conifer" title="Conifer">conifers</a> intercept falling snow and prevent accumulation on the ground. Snow suspended in trees ablates more rapidly than that on the ground, owing to its greater exposure to sun and air movement. Trees and other plants can also promote snow retention on the ground, which would otherwise be blown elsewhere or melted by the sun. Snow affects vegetation in several ways, the presence of stored water can promote growth, yet the annual onset of growth is dependent on the departure of the snowpack for those plants that are buried beneath it. Furthermore, avalanches and erosion from snowmelt can scour terrain of vegetation.<a href="#cite_note-Snowenclyclopedia-1">[1]</a> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Fjellrev_-_Arctic_fox_(24490250823).jpg" class="mw-file-description"><noscript><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Fjellrev_-_Arctic_fox_%2824490250823%29.jpg/220px-Fjellrev_-_Arctic_fox_%2824490250823%29.jpg" decoding="async" width="220" height="147" class="mw-file-element" data-file-width="3000" data-file-height="2000"></noscript><span class="lazy-image-placeholder" style="width: 220px;height: 147px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Fjellrev_-_Arctic_fox_%2824490250823%29.jpg/220px-Fjellrev_-_Arctic_fox_%2824490250823%29.jpg" data-width="220" data-height="147" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Fjellrev_-_Arctic_fox_%2824490250823%29.jpg/330px-Fjellrev_-_Arctic_fox_%2824490250823%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Fjellrev_-_Arctic_fox_%2824490250823%29.jpg/440px-Fjellrev_-_Arctic_fox_%2824490250823%29.jpg 2x" data-class="mw-file-element"> </a><figcaption><a href="/wiki/Arctic_fox" title="Arctic fox">Arctic fox</a>, a predator of smaller animals that live beneath the snow</figcaption></figure> Snow supports a wide variety of animals both on the surface and beneath. Many <a href="/wiki/Invertebrate" title="Invertebrate">invertebrates</a> thrive in snow, including <a href="/wiki/Spider" title="Spider">spiders</a>, <a href="/wiki/Wasp" title="Wasp">wasps</a>, <a href="/wiki/Beetle" title="Beetle">beetles</a>, <a href="/wiki/Snow_scorpionflies" class="mw-redirect" title="Snow scorpionflies">snow scorpionflies</a> and <a href="/wiki/Springtail" title="Springtail">springtails</a>. Such <a href="/wiki/Arthropod" title="Arthropod">arthropods</a> are typically active at temperatures down to −5 °C (23 °F). Invertebrates fall into two groups, regarding surviving subfreezing temperatures: freezing resistant and those that avoid freezing because they are freeze-sensitive. The first group may be cold hardy owing to the ability to produce <a href="/wiki/Antifreeze" title="Antifreeze">antifreeze</a> agents in their body fluids that allows survival of long exposure to sub-freezing conditions. Some organisms <a href="/wiki/Fasting" title="Fasting">fast</a> during the winter, which expels freezing-sensitive contents from their digestive tracts. The ability to survive the absence of oxygen in ice is an additional survival mechanism.<a href="#cite_note-SnowEcology-106">[106]</a> Small <a href="/wiki/Vertebrates" class="mw-redirect" title="Vertebrates">vertebrates</a> are active beneath the snow. Among vertebrates, <a href="/wiki/Alpine_salamander" title="Alpine salamander">alpine salamanders</a> are active in snow at temperatures as low as −8 °C (18 °F); they burrow to the surface in springtime and lay their eggs in melt ponds. Among mammals, those that remain active are typically smaller than 250 grams (8.8 oz). <a href="/wiki/Omnivore" title="Omnivore">Omnivores</a> are more likely to enter a torpor or be <a href="/wiki/Hibernate" class="mw-redirect" title="Hibernate">hibernators</a>, whereas <a href="/wiki/Herbivore" title="Herbivore">herbivores</a> are more likely to maintain food caches beneath the snow. <a href="/wiki/Vole" title="Vole">Voles</a> store up to 3 kilograms (6.6 lb) of food and <a href="/wiki/Pika" title="Pika">pikas</a> up to 20 kilograms (44 lb). Voles also huddle in communal nests to benefit from one another's warmth. On the surface, <a href="/wiki/Wolves" class="mw-redirect" title="Wolves">wolves</a>, <a href="/wiki/Coyotes" class="mw-redirect" title="Coyotes">coyotes</a>, <a href="/wiki/Fox" title="Fox">foxes</a>, <a href="/wiki/Lynx" title="Lynx">lynx</a>, and <a href="/wiki/Weasel" title="Weasel">weasels</a> rely on these subsurface dwellers for food and often dive into the snowpack to find them.<a href="#cite_note-SnowEcology-106">[106]</a> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(8)"><h2 id="Outside_of_Earth">Outside of Earth</h2></div><section class="mf-section-8 collapsible-block" id="mf-section-8"> Extraterrestrial "snow" includes water-based precipitation, but also precipitation of other compounds prevalent on other planets and moons in the <a href="/wiki/Solar_System" title="Solar System">Solar System</a>. Examples are: <ul><li>On <a href="/wiki/Mars" title="Mars">Mars</a>, observations of the <a href="/wiki/Phoenix_(spacecraft)" title="Phoenix (spacecraft)">Phoenix Mars lander</a> reveal that water-based snow crystals occur at high latitudes.<a href="#cite_note-107">[107]</a> Additionally, <a href="/wiki/Carbon_dioxide" title="Carbon dioxide">carbon dioxide</a> precipitates from clouds during the Martian winters at the poles and contributes to a seasonal deposit of that compound, which is the principal component of that <a href="/wiki/Martian_polar_ice_caps" title="Martian polar ice caps">planet's ice caps</a>.<a href="#cite_note-108">[108]</a></li> <li>On <a href="/wiki/Venus" title="Venus">Venus</a>, observations from the <a href="/wiki/Magellan_(spacecraft)" title="Magellan (spacecraft)">Magellan spacecraft</a> reveal the presence a metallic substance, which precipitates as "<a href="/wiki/Venus_snow" title="Venus snow">Venus snow</a>" and leaves a highly reflective substance at the tops of Venus's highest mountain peaks resembling terrestrial snow. Given the high temperatures on Venus, the leading candidates for the precipitate are <a href="/wiki/Lead_sulfide" title="Lead sulfide">lead sulfide</a> and <a href="/wiki/Bismuth(III)_sulfide" title="Bismuth(III) sulfide">bismuth(III) sulfide</a>.<a href="#cite_note-109">[109]</a></li> <li>On <a href="/wiki/Saturn" title="Saturn">Saturn</a>'s moon, <a href="/wiki/Titan_(moon)" title="Titan (moon)">Titan</a>, <a href="/wiki/Cassini%E2%80%93Huygens" title="Cassini–Huygens">Cassini–Huygens spacecraft</a> observations suggest the presence of <a href="/wiki/Methane" title="Methane">methane</a> or some other form of <a href="/wiki/Hydrocarbon" title="Hydrocarbon">hydrocarbon</a>-based crystalline deposits.<a href="#cite_note-110">[110]</a></li> <li>On <a href="/wiki/Pluto" title="Pluto">Pluto</a>, <a href="/wiki/New_Horizons" title="New Horizons">New Horizons</a>' observations show that Methane condenses at high altitude and falls down as frost.<a href="#cite_note-111">[111]</a></li></ul> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(9)"><h2 id="See_also">See also</h2></div><section class="mf-section-9 collapsible-block" id="mf-section-9"> Lexicon <ul><li><a href="/wiki/Eskimo_words_for_snow" title="Eskimo words for snow">Eskimo words for snow</a></li> <li><a href="/wiki/The_wrong_type_of_snow" title="The wrong type of snow">The wrong type of snow</a></li></ul> Notable snow events <ul><li><a href="/wiki/2007_Siberian_orange_snow" title="2007 Siberian orange snow">2007 Siberian orange snow</a></li> <li><a href="/wiki/Alberta_clipper" title="Alberta clipper">Alberta clipper</a></li> <li><a href="/wiki/List_of_blizzards" title="List of blizzards">List of blizzards</a></li> <li><a href="/wiki/List_of_snowiest_places_in_the_United_States_by_state" title="List of snowiest places in the United States by state">List of snowiest places in the United States by state</a></li></ul> Recreation <ul><li><a href="/wiki/Skiing" title="Skiing">Skiing</a></li> <li><a href="/wiki/Sled" title="Sled">Sled</a></li> <li><a href="/wiki/Snow_angel" title="Snow angel">Snow angel</a></li> <li><a href="/wiki/Snow_cannon" class="mw-redirect" title="Snow cannon">Snow cannon</a></li> <li><a href="/wiki/Snowman" title="Snowman">Snowman</a></li> <li><a href="/wiki/Snowmobiling" class="mw-redirect" title="Snowmobiling">Snowmobiling</a></li> <li><a href="/wiki/Winter_sport" class="mw-redirect" title="Winter sport">Winter sport</a></li></ul> Related concepts <ul><li><a href="/wiki/Blizzard" title="Blizzard">Blizzard</a></li> <li><a href="/wiki/Freezing_rain" title="Freezing rain">Freezing rain</a></li> <li><a href="/wiki/Frost" title="Frost">Frost</a></li> <li><a href="/wiki/Graupel" title="Graupel">Graupel</a></li> <li><a href="/wiki/Hail" title="Hail">Hail</a></li> <li><a href="/wiki/Ice" title="Ice">Ice</a></li> <li><a href="/wiki/Ice_pellets" title="Ice pellets">Ice pellets</a></li> <li><a href="/wiki/Hard_rime" class="mw-redirect" title="Hard rime">Rime</a></li> <li><a href="/wiki/Rain_and_snow_mixed" title="Rain and snow mixed">Sleet</a></li> <li><a href="/wiki/Snowbelt" title="Snowbelt">Snowbelt</a></li></ul> Science and scientists <ul><li><a href="/wiki/Snow_hydrology" title="Snow hydrology">Snow hydrology</a></li> <li><a href="/wiki/Timeline_of_snowflake_research" title="Timeline of snowflake research">Timeline of snowflake research</a></li> <li><a href="/wiki/Ukichiro_Nakaya" title="Ukichiro Nakaya">Ukichiro Nakaya</a></li></ul> Snow structures <ul><li><a href="/wiki/Igloo" title="Igloo">Igloo</a></li> <li><a href="/wiki/Quinzhee" title="Quinzhee">Quinzhee</a></li> <li><a href="/wiki/Snow_cave" title="Snow cave">Snow cave</a></li> <li><a href="/wiki/Snow_grooming" title="Snow grooming">Snow grooming</a></li></ul> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(10)"><h2 id="References">References</h2></div><section class="mf-section-10 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G. (2001). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=2GzOeAA7vucC&pg=PA248">Snow Ecology: An Interdisciplinary Examination of Snow-Covered Ecosystems</a>. Cambridge University Press. p. 248. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-521-58483-8" title="Special:BookSources/978-0-521-58483-8"><bdi>978-0-521-58483-8</bdi></a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Snow+Ecology%3A+An+Interdisciplinary+Examination+of+Snow-Covered+Ecosystems&rft.pages=248&rft.pub=Cambridge+University+Press&rft.date=2001&rft.isbn=978-0-521-58483-8&rft.aulast=Jones&rft.aufirst=H.+G.&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D2GzOeAA7vucC%26pg%3DPA248&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASnow" class="Z3988"> </li> <li id="cite_note-107"><a href="#cite_ref-107">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAnne_Minard2009" class="citation web cs1">Anne Minard (July 2, 2009). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20090917075510/http://news.nationalgeographic.com/news/2009/07/090702-snow-mars-phoenix.html">""Diamond Dust" Snow Falls Nightly on Mars"</a>. <a href="/wiki/National_Geographic_News" class="mw-redirect" title="National Geographic News">National Geographic News</a>. Archived from <a rel="nofollow" class="external text" href="http://news.nationalgeographic.com/news/2009/07/090702-snow-mars-phoenix.html">the original</a> on September 17, 2009.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=%22Diamond+Dust%22+Snow+Falls+Nightly+on+Mars&rft.pub=National+Geographic+News&rft.date=2009-07-02&rft.au=Anne+Minard&rft_id=http%3A%2F%2Fnews.nationalgeographic.com%2Fnews%2F2009%2F07%2F090702-snow-mars-phoenix.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASnow" class="Z3988"> </li> <li id="cite_note-108"><a href="#cite_ref-108">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAgustin_Chicarro2008" class="citation web cs1">Agustin Chicarro, Agustin (September 22, 2008). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230307035744/https://spaceref.com/press-release/mars-polar-cap-mystery-solved/">"Mars polar cap mystery solved"</a>. Spaceref.com. <a href="/wiki/European_Space_Agency" title="European Space Agency">European Space Agency</a>. Archived from <a rel="nofollow" class="external text" href="http://www.spaceref.com/news/viewpr.html?pid=26493">the original</a> on March 7, 2023. Retrieved December 8, 2016. <q>...the temperature of the low-pressure system is often below the condensation point for carbon dioxide, so the gas condenses and falls from the sky as snow and builds up on the ground as frost.</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Spaceref.com&rft.atitle=Mars+polar+cap+mystery+solved&rft.date=2008-09-22&rft.aulast=Agustin+Chicarro&rft.aufirst=Agustin&rft_id=http%3A%2F%2Fwww.spaceref.com%2Fnews%2Fviewpr.html%3Fpid%3D26493&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASnow" class="Z3988"> </li> <li id="cite_note-109"><a href="#cite_ref-109">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCarolyn_Jones_Otten2004" class="citation web cs1">Carolyn Jones Otten (2004). <a rel="nofollow" class="external text" href="http://news-info.wustl.edu/news/page/normal/633.html">"'Heavy metal' snow on Venus is lead sulfide"</a>. Washington University in St Louis. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080415000214/http://news-info.wustl.edu/news/page/normal/633.html">Archived</a> from the original on April 15, 2008. Retrieved August 21, 2007.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=%27Heavy+metal%27+snow+on+Venus+is+lead+sulfide&rft.pub=Washington+University+in+St+Louis&rft.date=2004&rft.au=Carolyn+Jones+Otten&rft_id=http%3A%2F%2Fnews-info.wustl.edu%2Fnews%2Fpage%2Fnormal%2F633.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASnow" class="Z3988"> </li> <li id="cite_note-110"><a href="#cite_ref-110">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCarolina_Martinez2006" class="citation web cs1">Carolina Martinez (December 12, 2006). <a rel="nofollow" class="external text" href="https://www.nasa.gov/mission_pages/cassini/media/cassini-20061212.html">"Massive Mountain Range Imaged on Saturn's Moon Titan"</a>. <a href="/wiki/NASA" title="NASA">NASA</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20160304072221/http://www.nasa.gov/mission_pages/cassini/media/cassini-20061212.html">Archived</a> from the original on March 4, 2016.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Massive+Mountain+Range+Imaged+on+Saturn%27s+Moon+Titan&rft.pub=NASA&rft.date=2006-12-12&rft.au=Carolina+Martinez&rft_id=http%3A%2F%2Fwww.nasa.gov%2Fmission_pages%2Fcassini%2Fmedia%2Fcassini-20061212.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASnow" class="Z3988"> </li> <li id="cite_note-111"><a href="#cite_ref-111">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20160305002947/https://www.nasa.gov/feature/methane-snow-on-pluto-s-peaks/">"Methane Snow on Pluto's Peaks | NASA"</a>. March 5, 2016. Archived from <a rel="nofollow" class="external text" href="https://www.nasa.gov/feature/methane-snow-on-pluto-s-peaks/">the original</a> on March 5, 2016. Retrieved September 26, 2024.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Methane+Snow+on+Pluto%27s+Peaks+%7C+NASA&rft.date=2016-03-05&rft_id=https%3A%2F%2Fwww.nasa.gov%2Ffeature%2Fmethane-snow-on-pluto-s-peaks%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASnow" class="Z3988"> </li> </ol></div> </section><div class="mw-heading mw-heading2 section-heading" onclick="mfTempOpenSection(11)"><h2 id="External_links">External links</h2></div><section class="mf-section-11 collapsible-block" id="mf-section-11"> <style data-mw-deduplicate="TemplateStyles:r1235681985">.mw-parser-output .side-box{margin:4px 0;box-sizing:border-box;border:1px solid #aaa;font-size:88%;line-height:1.25em;background-color:var(--background-color-interactive-subtle,#f8f9fa);display:flow-root}.mw-parser-output .side-box-abovebelow,.mw-parser-output .side-box-text{padding:0.25em 0.9em}.mw-parser-output .side-box-image{padding:2px 0 2px 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.sister-link{display:inline-block;margin-left:4px;width:182px;vertical-align:middle}@media print{body.ns-0 .mw-parser-output .sistersitebox{display:none!important}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-v2.svg"]{background-color:white}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .sistersitebox img[src*="Wiktionary-logo-v2.svg"]{background-color:white}}</style><div role="navigation" aria-labelledby="sister-projects" class="side-box metadata side-box-right sister-box sistersitebox plainlinks"><style data-mw-deduplicate="TemplateStyles:r1126788409">.mw-parser-output .plainlist ol,.mw-parser-output .plainlist ul{line-height:inherit;list-style:none;margin:0;padding:0}.mw-parser-output .plainlist ol li,.mw-parser-output .plainlist ul li{margin-bottom:0}</style> <div class="side-box-abovebelow"> Snow at Wikipedia's <a href="/wiki/Wikipedia:Wikimedia_sister_projects" title="Wikipedia:Wikimedia sister projects">sister projects</a></div> <div class="side-box-flex"> <div class="side-box-text plainlist"><ul><li><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/27px-Wiktionary-logo-v2.svg.png" decoding="async" width="27" height="27" class="mw-file-element" data-file-width="391" data-file-height="391"></noscript><span class="lazy-image-placeholder" style="width: 27px;height: 27px;" data-src="//upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/27px-Wiktionary-logo-v2.svg.png" data-alt="" data-width="27" data-height="27" data-srcset="//upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/41px-Wiktionary-logo-v2.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/0/06/Wiktionary-logo-v2.svg/54px-Wiktionary-logo-v2.svg.png 2x" data-class="mw-file-element"> <a href="https://en.wiktionary.org/wiki/Special:Search/Snow" class="extiw" title="wikt:Special:Search/Snow">Definitions</a> from Wiktionary</li><li><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/20px-Commons-logo.svg.png" decoding="async" width="20" height="27" class="mw-file-element" data-file-width="1024" data-file-height="1376"></noscript><span class="lazy-image-placeholder" style="width: 20px;height: 27px;" data-src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/20px-Commons-logo.svg.png" data-alt="" data-width="20" data-height="27" data-srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/40px-Commons-logo.svg.png 2x" data-class="mw-file-element"> <a href="https://commons.wikimedia.org/wiki/Snow" class="extiw" title="c:Snow">Media</a> from Commons</li><li><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/27px-Wikinews-logo.svg.png" 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class="lazy-image-placeholder" style="width: 23px;height: 27px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/23px-Wikiquote-logo.svg.png" data-alt="" data-width="23" data-height="27" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/35px-Wikiquote-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/46px-Wikiquote-logo.svg.png 2x" data-class="mw-file-element"> <a href="https://en.wikiquote.org/wiki/Snow" class="extiw" title="q:Snow">Quotations</a> from Wikiquote</li><li><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/26px-Wikisource-logo.svg.png" decoding="async" width="26" height="27" class="mw-file-element" data-file-width="410" data-file-height="430"></noscript><span class="lazy-image-placeholder" style="width: 26px;height: 27px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/26px-Wikisource-logo.svg.png" data-alt="" data-width="26" data-height="27" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/39px-Wikisource-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4c/Wikisource-logo.svg/51px-Wikisource-logo.svg.png 2x" data-class="mw-file-element"> <a href="https://en.wikisource.org/wiki/Special:Search/Snow" class="extiw" title="s:Special:Search/Snow">Texts</a> from Wikisource</li><li><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/27px-Wikibooks-logo.svg.png" decoding="async" width="27" height="27" class="mw-file-element" data-file-width="300" data-file-height="300"></noscript><span class="lazy-image-placeholder" style="width: 27px;height: 27px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/27px-Wikibooks-logo.svg.png" data-alt="" data-width="27" data-height="27" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/41px-Wikibooks-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikibooks-logo.svg/54px-Wikibooks-logo.svg.png 2x" data-class="mw-file-element"> <a href="https://en.wikibooks.org/wiki/Special:Search/Snow" class="extiw" title="b:Special:Search/Snow">Textbooks</a> from Wikibooks</li><li><noscript><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Wikiversity_logo_2017.svg/27px-Wikiversity_logo_2017.svg.png" decoding="async" width="27" height="22" class="mw-file-element" data-file-width="626" data-file-height="512"></noscript><span class="lazy-image-placeholder" style="width: 27px;height: 22px;" data-src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Wikiversity_logo_2017.svg/27px-Wikiversity_logo_2017.svg.png" data-alt="" data-width="27" data-height="22" data-srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Wikiversity_logo_2017.svg/41px-Wikiversity_logo_2017.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0b/Wikiversity_logo_2017.svg/54px-Wikiversity_logo_2017.svg.png 2x" data-class="mw-file-element"> <a href="https://en.wikiversity.org/wiki/Special:Search/Snow" class="extiw" title="v:Special:Search/Snow">Resources</a> from Wikiversity</li></ul></div></div> </div> <ul><li><a rel="nofollow" class="external text" href="http://www.unep.org/geo/geo%5Fice/">United Nations Environment Programme: Global Outlook for Ice and Snow</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070608011925/http://www.unep.org/geo/geo_ice/">Archived</a> June 8, 2007, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></li> <li><a rel="nofollow" class="external text" href="http://www.lowtem.hokudai.ac.jp/en/index.html">Institute of Low Temperature Science, Hokkaido University</a></li> <li><a rel="nofollow" class="external text" href="https://www.wsl.ch/en/snow-and-ice.html">Swiss Federal Institute for Forest, Snow and Landscape Research</a></li> <li><a rel="nofollow" class="external text" href="http://nsidc.org">National Snow and Ice Data Center of the United States</a></li> <li><a rel="nofollow" class="external text" href="http://design.medeek.com/resources/snow/groundsnowloads.html">American Society of Civil Engineers ground snow loads interactive map for the continental US</a></li></ul> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output 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.navbox-title{background-color:#ddf}.mw-parser-output .navbox-subgroup .navbox-group,.mw-parser-output .navbox-subgroup .navbox-abovebelow{background-color:#e6e6ff}.mw-parser-output .navbox-even{background-color:#f7f7f7}.mw-parser-output .navbox-odd{background-color:transparent}.mw-parser-output .navbox .hlist td dl,.mw-parser-output .navbox .hlist td ol,.mw-parser-output .navbox .hlist td ul,.mw-parser-output .navbox td.hlist dl,.mw-parser-output .navbox td.hlist ol,.mw-parser-output .navbox td.hlist ul{padding:0.125em 0}.mw-parser-output .navbox .navbar{display:block;font-size:100%}.mw-parser-output .navbox-title .navbar{float:left;text-align:left;margin-right:0.5em}body.skin--responsive .mw-parser-output .navbox-image img{max-width:none!important}@media print{body.ns-0 .mw-parser-output .navbox{display:none!important}}</style></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"><style data-mw-deduplicate="TemplateStyles:r1038841319">.mw-parser-output .tooltip-dotted{border-bottom:1px dotted;cursor:help}</style><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1038841319"></div>    </section></div> <noscript><img src="https://login.m.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1&mobile=1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Snow&oldid=1255607920">https://en.wikipedia.org/w/index.php?title=Snow&oldid=1255607920</a>"</div></div> </div> <div class="post-content" id="page-secondary-actions"> </div> </main> <footer class="mw-footer minerva-footer" role="contentinfo"> <a class="last-modified-bar" href="/w/index.php?title=Snow&action=history"> <div class="post-content last-modified-bar__content"> Last edited on 5 November 2024, at 20:18 </div> </a> <div class="post-content footer-content"> <div id='mw-data-after-content'> <div class="read-more-container"></div> </div> <div id="p-lang"> <h4>Languages</h4> <section> <ul id="p-variants" class="minerva-languages"></ul> <ul class="minerva-languages"><li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Sneeu" title="Sneeu – Afrikaans" lang="af" hreflang="af" data-title="Sneeu" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target">Afrikaans</a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Schnee" title="Schnee – Alemannic" lang="gsw" hreflang="gsw" data-title="Schnee" data-language-autonym="Alemannisch" data-language-local-name="Alemannic" class="interlanguage-link-target">Alemannisch</a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%8A%A0%E1%88%98%E1%8B%B3%E1%8B%AD" title="አመዳይ – Amharic" lang="am" hreflang="am" data-title="አመዳይ" data-language-autonym="አማርኛ" data-language-local-name="Amharic" class="interlanguage-link-target">አማርኛ</a></li><li class="interlanguage-link interwiki-anp mw-list-item"><a href="https://anp.wikipedia.org/wiki/%E0%A4%AC%E0%A4%B0%E0%A5%8D%E0%A4%AB" title="बर्फ – Angika" lang="anp" hreflang="anp" data-title="बर्फ" data-language-autonym="अंगिका" data-language-local-name="Angika" class="interlanguage-link-target">अंगिका</a></li><li class="interlanguage-link interwiki-ang mw-list-item"><a href="https://ang.wikipedia.org/wiki/Sn%C4%81w" title="Snāw – Old English" lang="ang" hreflang="ang" data-title="Snāw" data-language-autonym="Ænglisc" data-language-local-name="Old English" class="interlanguage-link-target">Ænglisc</a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%AB%D9%84%D8%AC" title="ثلج – Arabic" lang="ar" hreflang="ar" data-title="ثلج" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target">العربية</a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Nieu" title="Nieu – Aragonese" lang="an" hreflang="an" data-title="Nieu" data-language-autonym="Aragonés" data-language-local-name="Aragonese" class="interlanguage-link-target">Aragonés</a></li><li class="interlanguage-link interwiki-hyw mw-list-item"><a href="https://hyw.wikipedia.org/wiki/%D5%81%D5%AB%D6%82%D5%B6" title="Ձիւն – Western Armenian" lang="hyw" hreflang="hyw" data-title="Ձիւն" data-language-autonym="Արեւմտահայերէն" data-language-local-name="Western Armenian" class="interlanguage-link-target">Արեւմտահայերէն</a></li><li class="interlanguage-link interwiki-roa-rup mw-list-item"><a href="https://roa-rup.wikipedia.org/wiki/Neau%C3%A2" title="Neauâ – Aromanian" lang="rup" hreflang="rup" data-title="Neauâ" data-language-autonym="Armãneashti" data-language-local-name="Aromanian" class="interlanguage-link-target">Armãneashti</a></li><li class="interlanguage-link interwiki-as mw-list-item"><a href="https://as.wikipedia.org/wiki/%E0%A6%A4%E0%A7%81%E0%A6%B7%E0%A6%BE%E0%A7%B0" title="তুষাৰ – Assamese" lang="as" hreflang="as" data-title="তুষাৰ" data-language-autonym="অসমীয়া" data-language-local-name="Assamese" class="interlanguage-link-target">অসমীয়া</a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Nieve" title="Nieve – Asturian" lang="ast" hreflang="ast" data-title="Nieve" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target">Asturianu</a></li><li class="interlanguage-link interwiki-atj mw-list-item"><a href="https://atj.wikipedia.org/wiki/Sokipok" title="Sokipok – Atikamekw" lang="atj" hreflang="atj" data-title="Sokipok" data-language-autonym="Atikamekw" data-language-local-name="Atikamekw" class="interlanguage-link-target">Atikamekw</a></li><li class="interlanguage-link interwiki-gn mw-list-item"><a href="https://gn.wikipedia.org/wiki/Yrypy%27avev%C3%BAi" title="Yrypy'avevúi – Guarani" lang="gn" hreflang="gn" data-title="Yrypy'avevúi" data-language-autonym="Avañe'ẽ" data-language-local-name="Guarani" class="interlanguage-link-target">Avañe'ẽ</a></li><li class="interlanguage-link interwiki-ay mw-list-item"><a href="https://ay.wikipedia.org/wiki/Khunu" title="Khunu – Aymara" lang="ay" hreflang="ay" data-title="Khunu" data-language-autonym="Aymar aru" data-language-local-name="Aymara" class="interlanguage-link-target">Aymar aru</a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Qar" title="Qar – Azerbaijani" lang="az" hreflang="az" data-title="Qar" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target">Azərbaycanca</a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D9%82%D8%A7%D8%B1" title="قار – South Azerbaijani" lang="azb" hreflang="azb" data-title="قار" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target">تۆرکجه</a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%A4%E0%A7%81%E0%A6%B7%E0%A6%BE%E0%A6%B0" title="তুষার – Bangla" lang="bn" hreflang="bn" data-title="তুষার" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target">বাংলা</a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Seh" title="Seh – Minnan" lang="nan" hreflang="nan" data-title="Seh" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="Minnan" class="interlanguage-link-target">閩南語 / Bân-lâm-gú</a></li><li class="interlanguage-link interwiki-ba mw-list-item"><a href="https://ba.wikipedia.org/wiki/%D2%A0%D0%B0%D1%80" title="Ҡар – Bashkir" lang="ba" hreflang="ba" data-title="Ҡар" data-language-autonym="Башҡортса" data-language-local-name="Bashkir" class="interlanguage-link-target">Башҡортса</a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%A1%D0%BD%D0%B5%D0%B3" title="Снег – Belarusian" lang="be" hreflang="be" data-title="Снег" data-language-autonym="Беларуская" data-language-local-name="Belarusian" class="interlanguage-link-target">Беларуская</a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%A1%D1%8C%D0%BD%D0%B5%D0%B3" title="Сьнег – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Сьнег" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target">Беларуская (тарашкевіца)</a></li><li class="interlanguage-link interwiki-bh mw-list-item"><a href="https://bh.wikipedia.org/wiki/%E0%A4%AC%E0%A4%B0%E0%A5%8D%E0%A4%AB%E0%A4%AC%E0%A4%BE%E0%A4%B0%E0%A5%80" title="बर्फबारी – Bhojpuri" lang="bh" hreflang="bh" data-title="बर्फबारी" data-language-autonym="भोजपुरी" data-language-local-name="Bhojpuri" class="interlanguage-link-target">भोजपुरी</a></li><li class="interlanguage-link interwiki-bcl mw-list-item"><a href="https://bcl.wikipedia.org/wiki/Nyebe" title="Nyebe – Central Bikol" lang="bcl" hreflang="bcl" data-title="Nyebe" data-language-autonym="Bikol Central" data-language-local-name="Central Bikol" class="interlanguage-link-target">Bikol Central</a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A1%D0%BD%D1%8F%D0%B3" title="Сняг – Bulgarian" lang="bg" hreflang="bg" data-title="Сняг" data-language-autonym="Български" data-language-local-name="Bulgarian" class="interlanguage-link-target">Български</a></li><li class="interlanguage-link interwiki-bar mw-list-item"><a href="https://bar.wikipedia.org/wiki/Schn%C3%A4%C3%A4" title="Schnää – Bavarian" lang="bar" hreflang="bar" data-title="Schnää" data-language-autonym="Boarisch" data-language-local-name="Bavarian" class="interlanguage-link-target">Boarisch</a></li><li class="interlanguage-link interwiki-bo mw-list-item"><a href="https://bo.wikipedia.org/wiki/%E0%BD%82%E0%BD%84%E0%BD%A6" title="གངས – Tibetan" lang="bo" hreflang="bo" data-title="གངས" data-language-autonym="བོད་ཡིག" data-language-local-name="Tibetan" class="interlanguage-link-target">བོད་ཡིག</a></li><li class="interlanguage-link interwiki-bs badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://bs.wikipedia.org/wiki/Snijeg" title="Snijeg – Bosnian" lang="bs" hreflang="bs" data-title="Snijeg" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target">Bosanski</a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Erc%27h" title="Erc'h – Breton" lang="br" hreflang="br" data-title="Erc'h" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target">Brezhoneg</a></li><li class="interlanguage-link interwiki-bxr mw-list-item"><a href="https://bxr.wikipedia.org/wiki/%D0%A1%D0%B0%D2%BB%D0%B0%D0%BD" title="Саһан – Russia Buriat" lang="bxr" hreflang="bxr" data-title="Саһан" data-language-autonym="Буряад" data-language-local-name="Russia Buriat" class="interlanguage-link-target">Буряад</a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Neu" title="Neu – Catalan" lang="ca" hreflang="ca" data-title="Neu" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target">Català</a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%AE%D1%80" title="Юр – Chuvash" lang="cv" hreflang="cv" data-title="Юр" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target">Чӑвашла</a></li><li class="interlanguage-link interwiki-ceb mw-list-item"><a href="https://ceb.wikipedia.org/wiki/Niyebe" title="Niyebe – Cebuano" lang="ceb" hreflang="ceb" data-title="Niyebe" data-language-autonym="Cebuano" data-language-local-name="Cebuano" class="interlanguage-link-target">Cebuano</a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Sn%C3%ADh" title="Sníh – Czech" lang="cs" hreflang="cs" data-title="Sníh" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target">Čeština</a></li><li class="interlanguage-link interwiki-sn mw-list-item"><a href="https://sn.wikipedia.org/wiki/Sinowo" title="Sinowo – Shona" lang="sn" hreflang="sn" data-title="Sinowo" data-language-autonym="ChiShona" data-language-local-name="Shona" class="interlanguage-link-target">ChiShona</a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Eira" title="Eira – Welsh" lang="cy" hreflang="cy" data-title="Eira" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target">Cymraeg</a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Sne" title="Sne – Danish" lang="da" hreflang="da" data-title="Sne" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target">Dansk</a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D8%AA%D9%84%D8%AC" title="تلج – Moroccan Arabic" lang="ary" hreflang="ary" data-title="تلج" data-language-autonym="الدارجة" data-language-local-name="Moroccan Arabic" class="interlanguage-link-target">الدارجة</a></li><li class="interlanguage-link interwiki-se mw-list-item"><a href="https://se.wikipedia.org/wiki/Muohta" title="Muohta – Northern Sami" lang="se" hreflang="se" data-title="Muohta" data-language-autonym="Davvisámegiella" data-language-local-name="Northern Sami" class="interlanguage-link-target">Davvisámegiella</a></li><li class="interlanguage-link interwiki-pdc mw-list-item"><a href="https://pdc.wikipedia.org/wiki/Schnee" title="Schnee – Pennsylvania German" lang="pdc" hreflang="pdc" data-title="Schnee" data-language-autonym="Deitsch" data-language-local-name="Pennsylvania German" class="interlanguage-link-target">Deitsch</a></li><li class="interlanguage-link interwiki-de badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://de.wikipedia.org/wiki/Schnee" title="Schnee – German" lang="de" hreflang="de" data-title="Schnee" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target">Deutsch</a></li><li class="interlanguage-link interwiki-nv mw-list-item"><a href="https://nv.wikipedia.org/wiki/Yas" title="Yas – Navajo" lang="nv" hreflang="nv" data-title="Yas" data-language-autonym="Diné bizaad" data-language-local-name="Navajo" class="interlanguage-link-target">Diné bizaad</a></li><li class="interlanguage-link interwiki-dty mw-list-item"><a href="https://dty.wikipedia.org/wiki/%E0%A4%B9%E0%A4%BF%E0%A4%89%E0%A4%81" title="हिउँ – Doteli" lang="dty" hreflang="dty" data-title="हिउँ" data-language-autonym="डोटेली" data-language-local-name="Doteli" class="interlanguage-link-target">डोटेली</a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Lumi" title="Lumi – Estonian" lang="et" hreflang="et" data-title="Lumi" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target">Eesti</a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%A7%CE%B9%CF%8C%CE%BD%CE%B9" title="Χιόνι – Greek" lang="el" hreflang="el" data-title="Χιόνι" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target">Ελληνικά</a></li><li class="interlanguage-link interwiki-eml mw-list-item"><a href="https://eml.wikipedia.org/wiki/Naiv" title="Naiv – Emiliano-Romagnolo" lang="egl" hreflang="egl" data-title="Naiv" data-language-autonym="Emiliàn e rumagnòl" data-language-local-name="Emiliano-Romagnolo" class="interlanguage-link-target">Emiliàn e rumagnòl</a></li><li class="interlanguage-link interwiki-myv mw-list-item"><a href="https://myv.wikipedia.org/wiki/%D0%9B%D0%BE%D0%B2" title="Лов – Erzya" lang="myv" hreflang="myv" data-title="Лов" data-language-autonym="Эрзянь" data-language-local-name="Erzya" class="interlanguage-link-target">Эрзянь</a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Nieve" title="Nieve – Spanish" lang="es" hreflang="es" data-title="Nieve" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target">Español</a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Ne%C4%9Do" title="Neĝo – Esperanto" lang="eo" hreflang="eo" data-title="Neĝo" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target">Esperanto</a></li><li class="interlanguage-link interwiki-ext mw-list-item"><a href="https://ext.wikipedia.org/wiki/%C3%91evi" title="Ñevi – Extremaduran" lang="ext" hreflang="ext" data-title="Ñevi" data-language-autonym="Estremeñu" data-language-local-name="Extremaduran" class="interlanguage-link-target">Estremeñu</a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Elur" title="Elur – Basque" lang="eu" hreflang="eu" data-title="Elur" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target">Euskara</a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%A8%D8%B1%D9%81" title="برف – Persian" lang="fa" hreflang="fa" data-title="برف" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target">فارسی</a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Barf" title="Barf – Fiji Hindi" lang="hif" hreflang="hif" data-title="Barf" data-language-autonym="Fiji Hindi" data-language-local-name="Fiji Hindi" class="interlanguage-link-target">Fiji Hindi</a></li><li class="interlanguage-link interwiki-fo mw-list-item"><a href="https://fo.wikipedia.org/wiki/Kavi" title="Kavi – Faroese" lang="fo" hreflang="fo" data-title="Kavi" data-language-autonym="Føroyskt" data-language-local-name="Faroese" class="interlanguage-link-target">Føroyskt</a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Neige" title="Neige – French" lang="fr" hreflang="fr" data-title="Neige" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target">Français</a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Snie" title="Snie – Western Frisian" lang="fy" hreflang="fy" data-title="Snie" data-language-autonym="Frysk" data-language-local-name="Western Frisian" class="interlanguage-link-target">Frysk</a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Sneachta" title="Sneachta – Irish" lang="ga" hreflang="ga" data-title="Sneachta" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target">Gaeilge</a></li><li class="interlanguage-link interwiki-gv mw-list-item"><a href="https://gv.wikipedia.org/wiki/Sniaghtey" title="Sniaghtey – Manx" lang="gv" hreflang="gv" data-title="Sniaghtey" data-language-autonym="Gaelg" data-language-local-name="Manx" class="interlanguage-link-target">Gaelg</a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Sneachd" title="Sneachd – Scottish Gaelic" lang="gd" hreflang="gd" data-title="Sneachd" data-language-autonym="Gàidhlig" data-language-local-name="Scottish Gaelic" class="interlanguage-link-target">Gàidhlig</a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Neve" title="Neve – Galician" lang="gl" hreflang="gl" data-title="Neve" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target">Galego</a></li><li class="interlanguage-link interwiki-inh mw-list-item"><a href="https://inh.wikipedia.org/wiki/%D0%9B%D0%BE%D0%B0" title="Лоа – Ingush" lang="inh" hreflang="inh" data-title="Лоа" data-language-autonym="ГӀалгӀай" data-language-local-name="Ingush" class="interlanguage-link-target">ГӀалгӀай</a></li><li class="interlanguage-link interwiki-gan mw-list-item"><a href="https://gan.wikipedia.org/wiki/%E9%9B%AA" title="雪 – Gan" lang="gan" hreflang="gan" data-title="雪" data-language-autonym="贛語" data-language-local-name="Gan" class="interlanguage-link-target">贛語</a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%B9%E0%AA%BF%E0%AA%AE%E0%AA%B5%E0%AA%B0%E0%AB%8D%E0%AA%B7%E0%AA%BE" title="હિમવર્ષા – Gujarati" lang="gu" hreflang="gu" data-title="હિમવર્ષા" data-language-autonym="ગુજરાતી" data-language-local-name="Gujarati" class="interlanguage-link-target">ગુજરાતી</a></li><li class="interlanguage-link interwiki-hak mw-list-item"><a href="https://hak.wikipedia.org/wiki/Siet" title="Siet – Hakka Chinese" lang="hak" hreflang="hak" data-title="Siet" data-language-autonym="客家語 / Hak-kâ-ngî" data-language-local-name="Hakka Chinese" class="interlanguage-link-target">客家語 / Hak-kâ-ngî</a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%88%88_(%EB%82%A0%EC%94%A8)" title="눈 (날씨) – Korean" lang="ko" hreflang="ko" data-title="눈 (날씨)" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target">한국어</a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D5%81%D5%B5%D5%B8%D6%82%D5%B6" title="Ձյուն – Armenian" lang="hy" hreflang="hy" data-title="Ձյուն" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target">Հայերեն</a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%B9%E0%A4%BF%E0%A4%AE" title="हिम – Hindi" lang="hi" hreflang="hi" data-title="हिम" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target">हिन्दी</a></li><li class="interlanguage-link interwiki-hsb mw-list-item"><a href="https://hsb.wikipedia.org/wiki/Sn%C4%9Bh" title="Sněh – Upper Sorbian" lang="hsb" hreflang="hsb" data-title="Sněh" data-language-autonym="Hornjoserbsce" data-language-local-name="Upper Sorbian" class="interlanguage-link-target">Hornjoserbsce</a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Snijeg" title="Snijeg – Croatian" lang="hr" hreflang="hr" data-title="Snijeg" data-language-autonym="Hrvatski" data-language-local-name="Croatian" class="interlanguage-link-target">Hrvatski</a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Nivo" title="Nivo – Ido" lang="io" hreflang="io" data-title="Nivo" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target">Ido</a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Salju" title="Salju – Indonesian" lang="id" hreflang="id" data-title="Salju" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target">Bahasa Indonesia</a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Nive" title="Nive – Interlingua" lang="ia" hreflang="ia" data-title="Nive" data-language-autonym="Interlingua" data-language-local-name="Interlingua" class="interlanguage-link-target">Interlingua</a></li><li class="interlanguage-link interwiki-ie mw-list-item"><a href="https://ie.wikipedia.org/wiki/Nive" title="Nive – Interlingue" lang="ie" hreflang="ie" data-title="Nive" data-language-autonym="Interlingue" data-language-local-name="Interlingue" class="interlanguage-link-target">Interlingue</a></li><li class="interlanguage-link interwiki-ik mw-list-item"><a href="https://ik.wikipedia.org/wiki/Apun" title="Apun – Inupiaq" lang="ik" hreflang="ik" data-title="Apun" data-language-autonym="Iñupiatun" data-language-local-name="Inupiaq" class="interlanguage-link-target">Iñupiatun</a></li><li class="interlanguage-link interwiki-zu mw-list-item"><a href="https://zu.wikipedia.org/wiki/Umkhithiko" title="Umkhithiko – Zulu" lang="zu" hreflang="zu" data-title="Umkhithiko" data-language-autonym="IsiZulu" data-language-local-name="Zulu" class="interlanguage-link-target">IsiZulu</a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Snj%C3%B3r" title="Snjór – Icelandic" lang="is" hreflang="is" data-title="Snjór" data-language-autonym="Íslenska" data-language-local-name="Icelandic" class="interlanguage-link-target">Íslenska</a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Neve" title="Neve – Italian" lang="it" hreflang="it" data-title="Neve" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target">Italiano</a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A9%D7%9C%D7%92" title="שלג – Hebrew" lang="he" hreflang="he" data-title="שלג" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target">עברית</a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Hima" title="Hima – Javanese" lang="jv" hreflang="jv" data-title="Hima" data-language-autonym="Jawa" data-language-local-name="Javanese" class="interlanguage-link-target">Jawa</a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/%C6%89omba_m%CA%8Bl%CA%8Bm" title="Ɖomba mʋlʋm – Kabiye" lang="kbp" hreflang="kbp" data-title="Ɖomba mʋlʋm" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target">Kabɩyɛ</a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%B9%E0%B2%BF%E0%B2%AE" title="ಹಿಮ – Kannada" lang="kn" hreflang="kn" data-title="ಹಿಮ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target">ಕನ್ನಡ</a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%97%E1%83%9D%E1%83%95%E1%83%9A%E1%83%98" title="თოვლი – Georgian" lang="ka" hreflang="ka" data-title="თოვლი" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target">ქართული</a></li><li class="interlanguage-link interwiki-ks mw-list-item"><a href="https://ks.wikipedia.org/wiki/%D8%B4%DB%8C%D9%96%D9%86" title="شیٖن – Kashmiri" lang="ks" hreflang="ks" data-title="شیٖن" data-language-autonym="कॉशुर / کٲشُر" data-language-local-name="Kashmiri" class="interlanguage-link-target">कॉशुर / کٲشُر</a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D2%9A%D0%B0%D1%80" title="Қар – Kazakh" lang="kk" hreflang="kk" data-title="Қар" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target">Қазақша</a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Theluji" title="Theluji – Swahili" lang="sw" hreflang="sw" data-title="Theluji" data-language-autonym="Kiswahili" data-language-local-name="Swahili" class="interlanguage-link-target">Kiswahili</a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Lan%C3%A8j" title="Lanèj – Haitian Creole" lang="ht" hreflang="ht" data-title="Lanèj" data-language-autonym="Kreyòl ayisyen" data-language-local-name="Haitian Creole" class="interlanguage-link-target">Kreyòl ayisyen</a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Berf" title="Berf – Kurdish" lang="ku" hreflang="ku" data-title="Berf" data-language-autonym="Kurdî" data-language-local-name="Kurdish" class="interlanguage-link-target">Kurdî</a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%9A%D0%B0%D1%80" title="Кар – Kyrgyz" lang="ky" hreflang="ky" data-title="Кар" data-language-autonym="Кыргызча" data-language-local-name="Kyrgyz" class="interlanguage-link-target">Кыргызча</a></li><li class="interlanguage-link interwiki-lld mw-list-item"><a href="https://lld.wikipedia.org/wiki/N%C3%ABif" title="Nëif – Ladin" lang="lld" hreflang="lld" data-title="Nëif" data-language-autonym="Ladin" data-language-local-name="Ladin" class="interlanguage-link-target">Ladin</a></li><li class="interlanguage-link interwiki-lo mw-list-item"><a href="https://lo.wikipedia.org/wiki/%E0%BA%AB%E0%BA%B4%E0%BA%A1%E0%BA%B0" title="ຫິມະ – Lao" lang="lo" hreflang="lo" data-title="ຫິມະ" data-language-autonym="ລາວ" data-language-local-name="Lao" class="interlanguage-link-target">ລາວ</a></li><li class="interlanguage-link interwiki-la badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://la.wikipedia.org/wiki/Nix" title="Nix – Latin" lang="la" hreflang="la" data-title="Nix" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target">Latina</a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Sniegs" title="Sniegs – Latvian" lang="lv" hreflang="lv" data-title="Sniegs" data-language-autonym="Latviešu" data-language-local-name="Latvian" class="interlanguage-link-target">Latviešu</a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Schn%C3%A9i" title="Schnéi – Luxembourgish" lang="lb" hreflang="lb" data-title="Schnéi" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luxembourgish" class="interlanguage-link-target">Lëtzebuergesch</a></li><li class="interlanguage-link interwiki-lez mw-list-item"><a href="https://lez.wikipedia.org/wiki/%D0%96%D0%B8%D0%B2" title="Жив – Lezghian" lang="lez" hreflang="lez" data-title="Жив" data-language-autonym="Лезги" data-language-local-name="Lezghian" class="interlanguage-link-target">Лезги</a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Sniegas" title="Sniegas – Lithuanian" lang="lt" hreflang="lt" data-title="Sniegas" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target">Lietuvių</a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Snie%C3%AB" title="Snieë – Limburgish" lang="li" hreflang="li" data-title="Snieë" data-language-autonym="Limburgs" data-language-local-name="Limburgish" class="interlanguage-link-target">Limburgs</a></li><li class="interlanguage-link interwiki-ln mw-list-item"><a href="https://ln.wikipedia.org/wiki/Neje" title="Neje – Lingala" lang="ln" hreflang="ln" data-title="Neje" data-language-autonym="Lingála" data-language-local-name="Lingala" class="interlanguage-link-target">Lingála</a></li><li class="interlanguage-link interwiki-lfn mw-list-item"><a href="https://lfn.wikipedia.org/wiki/Neva" title="Neva – Lingua Franca Nova" lang="lfn" hreflang="lfn" data-title="Neva" data-language-autonym="Lingua Franca Nova" data-language-local-name="Lingua Franca Nova" class="interlanguage-link-target">Lingua Franca Nova</a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Nev" title="Nev – Lombard" lang="lmo" hreflang="lmo" data-title="Nev" data-language-autonym="Lombard" data-language-local-name="Lombard" class="interlanguage-link-target">Lombard</a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/H%C3%B3" title="Hó – Hungarian" lang="hu" hreflang="hu" data-title="Hó" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target">Magyar</a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A1%D0%BD%D0%B5%D0%B3" title="Снег – Macedonian" lang="mk" hreflang="mk" data-title="Снег" data-language-autonym="Македонски" data-language-local-name="Macedonian" class="interlanguage-link-target">Македонски</a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Oram-panala" title="Oram-panala – Malagasy" lang="mg" hreflang="mg" data-title="Oram-panala" data-language-autonym="Malagasy" data-language-local-name="Malagasy" class="interlanguage-link-target">Malagasy</a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%B9%E0%B4%BF%E0%B4%AE%E0%B4%82" title="ഹിമം – Malayalam" lang="ml" hreflang="ml" data-title="ഹിമം" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target">മലയാളം</a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%B9%E0%A4%BF%E0%A4%AE%E0%A4%B5%E0%A4%B0%E0%A5%8D%E0%A4%B7%E0%A4%BE" title="हिमवर्षा – Marathi" lang="mr" hreflang="mr" data-title="हिमवर्षा" data-language-autonym="मराठी" data-language-local-name="Marathi" class="interlanguage-link-target">मराठी</a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%97%E1%83%98%E1%83%A0%E1%83%98" title="თირი – Mingrelian" lang="xmf" hreflang="xmf" data-title="თირი" data-language-autonym="მარგალური" data-language-local-name="Mingrelian" class="interlanguage-link-target">მარგალური</a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%AA%D9%84%D8%AC" title="تلج – Egyptian Arabic" lang="arz" hreflang="arz" data-title="تلج" data-language-autonym="مصرى" data-language-local-name="Egyptian Arabic" class="interlanguage-link-target">مصرى</a></li><li class="interlanguage-link interwiki-mzn mw-list-item"><a href="https://mzn.wikipedia.org/wiki/%D9%88%D8%B1%D9%81" title="ورف – Mazanderani" lang="mzn" hreflang="mzn" data-title="ورف" data-language-autonym="مازِرونی" data-language-local-name="Mazanderani" class="interlanguage-link-target">مازِرونی</a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Salji" title="Salji – Malay" lang="ms" hreflang="ms" data-title="Salji" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target">Bahasa Melayu</a></li><li class="interlanguage-link interwiki-min mw-list-item"><a href="https://min.wikipedia.org/wiki/Salju" title="Salju – Minangkabau" lang="min" hreflang="min" data-title="Salju" data-language-autonym="Minangkabau" data-language-local-name="Minangkabau" class="interlanguage-link-target">Minangkabau</a></li><li class="interlanguage-link interwiki-cdo mw-list-item"><a href="https://cdo.wikipedia.org/wiki/Su%C3%B3k" title="Suók – Mindong" lang="cdo" hreflang="cdo" data-title="Suók" data-language-autonym="閩東語 / Mìng-dĕ̤ng-ngṳ̄" data-language-local-name="Mindong" class="interlanguage-link-target">閩東語 / Mìng-dĕ̤ng-ngṳ̄</a></li><li class="interlanguage-link interwiki-mdf mw-list-item"><a href="https://mdf.wikipedia.org/wiki/%D0%9B%D0%BE%D0%B2" title="Лов – Moksha" lang="mdf" hreflang="mdf" data-title="Лов" data-language-autonym="Мокшень" data-language-local-name="Moksha" class="interlanguage-link-target">Мокшень</a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%A6%D0%B0%D1%81" title="Цас – Mongolian" lang="mn" hreflang="mn" data-title="Цас" data-language-autonym="Монгол" data-language-local-name="Mongolian" class="interlanguage-link-target">Монгол</a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%94%E1%80%BE%E1%80%84%E1%80%BA%E1%80%B8" title="နှင်း – Burmese" lang="my" hreflang="my" data-title="နှင်း" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Burmese" class="interlanguage-link-target">မြန်မာဘာသာ</a></li><li class="interlanguage-link interwiki-nah mw-list-item"><a href="https://nah.wikipedia.org/wiki/Cepayahuitl" title="Cepayahuitl – Nahuatl" lang="nah" hreflang="nah" data-title="Cepayahuitl" data-language-autonym="Nāhuatl" data-language-local-name="Nahuatl" class="interlanguage-link-target">Nāhuatl</a></li><li class="interlanguage-link interwiki-fj mw-list-item"><a href="https://fj.wikipedia.org/wiki/Ucacevata" title="Ucacevata – Fijian" lang="fj" hreflang="fj" data-title="Ucacevata" data-language-autonym="Na Vosa Vakaviti" data-language-local-name="Fijian" class="interlanguage-link-target">Na Vosa Vakaviti</a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Sneeuw" title="Sneeuw – Dutch" lang="nl" hreflang="nl" data-title="Sneeuw" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target">Nederlands</a></li><li class="interlanguage-link interwiki-nds-nl mw-list-item"><a href="https://nds-nl.wikipedia.org/wiki/Sney" title="Sney – Low Saxon" lang="nds-NL" hreflang="nds-NL" data-title="Sney" data-language-autonym="Nedersaksies" data-language-local-name="Low Saxon" class="interlanguage-link-target">Nedersaksies</a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%B9%E0%A4%BF%E0%A4%89%E0%A4%81" title="हिउँ – Nepali" lang="ne" hreflang="ne" data-title="हिउँ" data-language-autonym="नेपाली" data-language-local-name="Nepali" class="interlanguage-link-target">नेपाली</a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%9A%E0%A5%8D%E0%A4%B5%E0%A4%BE%E0%A4%AA%E0%A5%81_%E0%A4%97%E0%A4%BE%E0%A4%AF%E0%A5%81" title="च्वापु गायु – Newari" lang="new" hreflang="new" data-title="च्वापु गायु" data-language-autonym="नेपाल भाषा" data-language-local-name="Newari" class="interlanguage-link-target">नेपाल भाषा</a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E9%9B%AA" title="雪 – Japanese" lang="ja" hreflang="ja" data-title="雪" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target">日本語</a></li><li class="interlanguage-link interwiki-nap mw-list-item"><a href="https://nap.wikipedia.org/wiki/Neva" title="Neva – Neapolitan" lang="nap" hreflang="nap" data-title="Neva" data-language-autonym="Napulitano" data-language-local-name="Neapolitan" class="interlanguage-link-target">Napulitano</a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/%D0%9B%D0%BE" title="Ло – Chechen" lang="ce" hreflang="ce" data-title="Ло" data-language-autonym="Нохчийн" data-language-local-name="Chechen" class="interlanguage-link-target">Нохчийн</a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Sn%C3%A4" title="Snä – Northern Frisian" lang="frr" hreflang="frr" data-title="Snä" data-language-autonym="Nordfriisk" data-language-local-name="Northern Frisian" class="interlanguage-link-target">Nordfriisk</a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Sn%C3%B8" title="Snø – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Snø" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target">Norsk bokmål</a></li><li class="interlanguage-link interwiki-nn badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://nn.wikipedia.org/wiki/Sn%C3%B8" title="Snø – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Snø" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target">Norsk nynorsk</a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/N%C3%A8u" title="Nèu – Occitan" lang="oc" hreflang="oc" data-title="Nèu" data-language-autonym="Occitan" data-language-local-name="Occitan" class="interlanguage-link-target">Occitan</a></li><li class="interlanguage-link interwiki-mhr mw-list-item"><a href="https://mhr.wikipedia.org/wiki/%D0%9B%D1%83%D0%BC" title="Лум – Eastern Mari" lang="mhr" hreflang="mhr" data-title="Лум" data-language-autonym="Олык марий" data-language-local-name="Eastern Mari" class="interlanguage-link-target">Олык марий</a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Qor" title="Qor – Uzbek" lang="uz" hreflang="uz" data-title="Qor" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target">Oʻzbekcha / ўзбекча</a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%AC%E0%A8%B0%E0%A8%AB%E0%A8%BC_(%E0%A8%B5%E0%A8%B0%E0%A8%96%E0%A8%BE)" title="ਬਰਫ਼ (ਵਰਖਾ) – Punjabi" lang="pa" hreflang="pa" data-title="ਬਰਫ਼ (ਵਰਖਾ)" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Punjabi" class="interlanguage-link-target">ਪੰਜਾਬੀ</a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%A8%D8%B1%D9%81_%D8%A8%D8%A7%D8%B1%DB%8C" title="برف باری – Western Punjabi" lang="pnb" hreflang="pnb" data-title="برف باری" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target">پنجابی</a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D9%88%D8%A7%D9%88%D8%B1%D9%87" title="واوره – Pashto" lang="ps" hreflang="ps" data-title="واوره" data-language-autonym="پښتو" data-language-local-name="Pashto" class="interlanguage-link-target">پښتو</a></li><li class="interlanguage-link interwiki-koi mw-list-item"><a href="https://koi.wikipedia.org/wiki/%D0%9B%D1%8B%D0%BC" title="Лым – Komi-Permyak" lang="koi" hreflang="koi" data-title="Лым" data-language-autonym="Перем коми" data-language-local-name="Komi-Permyak" class="interlanguage-link-target">Перем коми</a></li><li class="interlanguage-link interwiki-pcd mw-list-item"><a href="https://pcd.wikipedia.org/wiki/N%C3%A8ges" title="Nèges – Picard" lang="pcd" hreflang="pcd" data-title="Nèges" data-language-autonym="Picard" data-language-local-name="Picard" class="interlanguage-link-target">Picard</a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Fi%C3%B2ca" title="Fiòca – Piedmontese" lang="pms" hreflang="pms" data-title="Fiòca" data-language-autonym="Piemontèis" data-language-local-name="Piedmontese" class="interlanguage-link-target">Piemontèis</a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Snee" title="Snee – Low German" lang="nds" hreflang="nds" data-title="Snee" data-language-autonym="Plattdüütsch" data-language-local-name="Low German" class="interlanguage-link-target">Plattdüütsch</a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/%C5%9Anieg" title="Śnieg – Polish" lang="pl" hreflang="pl" data-title="Śnieg" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target">Polski</a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Neve" title="Neve – Portuguese" lang="pt" hreflang="pt" data-title="Neve" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target">Português</a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Z%C4%83pad%C4%83" title="Zăpadă – Romanian" lang="ro" hreflang="ro" data-title="Zăpadă" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target">Română</a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Rit%27i" title="Rit'i – Quechua" lang="qu" hreflang="qu" data-title="Rit'i" data-language-autonym="Runa Simi" data-language-local-name="Quechua" class="interlanguage-link-target">Runa Simi</a></li><li class="interlanguage-link interwiki-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/%D0%A1%D0%BD%D1%97%D0%B3" title="Снїг – Rusyn" lang="rue" hreflang="rue" data-title="Снїг" data-language-autonym="Русиньскый" data-language-local-name="Rusyn" class="interlanguage-link-target">Русиньскый</a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D0%BD%D0%B5%D0%B3" title="Снег – Russian" lang="ru" hreflang="ru" data-title="Снег" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target">Русский</a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%A5%D0%B0%D0%B0%D1%80" title="Хаар – Yakut" lang="sah" hreflang="sah" data-title="Хаар" data-language-autonym="Саха тыла" data-language-local-name="Yakut" class="interlanguage-link-target">Саха тыла</a></li><li class="interlanguage-link interwiki-szy mw-list-item"><a href="https://szy.wikipedia.org/wiki/suleda" title="suleda – Sakizaya" lang="szy" hreflang="szy" data-title="suleda" data-language-autonym="Sakizaya" data-language-local-name="Sakizaya" class="interlanguage-link-target">Sakizaya</a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Nie" title="Nie – Sardinian" lang="sc" hreflang="sc" data-title="Nie" data-language-autonym="Sardu" data-language-local-name="Sardinian" class="interlanguage-link-target">Sardu</a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Snaw" title="Snaw – Scots" lang="sco" hreflang="sco" data-title="Snaw" data-language-autonym="Scots" data-language-local-name="Scots" class="interlanguage-link-target">Scots</a></li><li class="interlanguage-link interwiki-nso mw-list-item"><a href="https://nso.wikipedia.org/wiki/Lehlwa" title="Lehlwa – Northern Sotho" lang="nso" hreflang="nso" data-title="Lehlwa" data-language-autonym="Sesotho sa Leboa" data-language-local-name="Northern Sotho" class="interlanguage-link-target">Sesotho sa Leboa</a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/D%C3%ABbora" title="Dëbora – Albanian" lang="sq" hreflang="sq" data-title="Dëbora" data-language-autonym="Shqip" data-language-local-name="Albanian" class="interlanguage-link-target">Shqip</a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Nivi" title="Nivi – Sicilian" lang="scn" hreflang="scn" data-title="Nivi" data-language-autonym="Sicilianu" data-language-local-name="Sicilian" class="interlanguage-link-target">Sicilianu</a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B7%84%E0%B7%92%E0%B6%B8" title="හිම – Sinhala" lang="si" hreflang="si" data-title="හිම" data-language-autonym="සිංහල" data-language-local-name="Sinhala" class="interlanguage-link-target">සිංහල</a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Snow" title="Snow – Simple English" lang="en-simple" hreflang="en-simple" data-title="Snow" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target">Simple English</a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D8%A8%D8%B1%D9%81_%D8%A8%D8%A7%D8%B1%D9%8A" title="برف باري – Sindhi" lang="sd" hreflang="sd" data-title="برف باري" data-language-autonym="سنڌي" data-language-local-name="Sindhi" class="interlanguage-link-target">سنڌي</a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Sneh" title="Sneh – Slovak" lang="sk" hreflang="sk" data-title="Sneh" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target">Slovenčina</a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Sneg" title="Sneg – Slovenian" lang="sl" hreflang="sl" data-title="Sneg" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target">Slovenščina</a></li><li class="interlanguage-link interwiki-szl mw-list-item"><a href="https://szl.wikipedia.org/wiki/%C5%9A%C5%84yg" title="Śńyg – Silesian" lang="szl" hreflang="szl" data-title="Śńyg" data-language-autonym="Ślůnski" data-language-local-name="Silesian" class="interlanguage-link-target">Ślůnski</a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%A8%DB%95%D9%81%D8%B1" title="بەفر – Central Kurdish" lang="ckb" hreflang="ckb" data-title="بەفر" data-language-autonym="کوردی" data-language-local-name="Central Kurdish" class="interlanguage-link-target">کوردی</a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A1%D0%BD%D0%B5%D0%B3" title="Снег – Serbian" lang="sr" hreflang="sr" data-title="Снег" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target">Српски / srpski</a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Snijeg" title="Snijeg – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Snijeg" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target">Srpskohrvatski / српскохрватски</a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Salju" title="Salju – Sundanese" lang="su" hreflang="su" data-title="Salju" data-language-autonym="Sunda" data-language-local-name="Sundanese" class="interlanguage-link-target">Sunda</a></li><li class="interlanguage-link interwiki-fi badge-Q17437796 badge-featuredarticle mw-list-item" title="featured article badge"><a href="https://fi.wikipedia.org/wiki/Lumi" title="Lumi – Finnish" lang="fi" hreflang="fi" data-title="Lumi" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target">Suomi</a></li><li class="interlanguage-link interwiki-sv badge-Q17559452 badge-recommendedarticle mw-list-item" title="recommended article"><a href="https://sv.wikipedia.org/wiki/Sn%C3%B6" title="Snö – Swedish" lang="sv" hreflang="sv" data-title="Snö" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target">Svenska</a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Niyebe" title="Niyebe – Tagalog" lang="tl" hreflang="tl" data-title="Niyebe" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target">Tagalog</a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%AA%E0%AE%A9%E0%AE%BF%E0%AE%A4%E0%AF%8D%E0%AE%A4%E0%AF%82%E0%AE%B5%E0%AE%BF" title="பனித்தூவி – Tamil" lang="ta" hreflang="ta" data-title="பனித்தூவி" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target">தமிழ்</a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Adfel" title="Adfel – Kabyle" lang="kab" hreflang="kab" data-title="Adfel" data-language-autonym="Taqbaylit" data-language-local-name="Kabyle" class="interlanguage-link-target">Taqbaylit</a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%9A%D0%B0%D1%80" title="Кар – Tatar" lang="tt" hreflang="tt" data-title="Кар" data-language-autonym="Татарча / tatarça" data-language-local-name="Tatar" class="interlanguage-link-target">Татарча / tatarça</a></li><li class="interlanguage-link interwiki-tay mw-list-item"><a href="https://tay.wikipedia.org/wiki/hlaqiy" title="hlaqiy – Tayal" lang="tay" hreflang="tay" data-title="hlaqiy" data-language-autonym="Tayal" data-language-local-name="Tayal" class="interlanguage-link-target">Tayal</a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%AE%E0%B0%82%E0%B0%9A%E0%B1%81%E0%B0%97%E0%B0%B3%E0%B1%8D%E0%B0%B2%E0%B1%81" title="మంచుగళ్లు – Telugu" lang="te" hreflang="te" data-title="మంచుగళ్లు" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target">తెలుగు</a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%AB%E0%B8%B4%E0%B8%A1%E0%B8%B0" title="หิมะ – Thai" lang="th" hreflang="th" data-title="หิมะ" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target">ไทย</a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%91%D0%B0%D1%80%D1%84" title="Барф – Tajik" lang="tg" hreflang="tg" data-title="Барф" data-language-autonym="Тоҷикӣ" data-language-local-name="Tajik" class="interlanguage-link-target">Тоҷикӣ</a></li><li class="interlanguage-link interwiki-chr mw-list-item"><a href="https://chr.wikipedia.org/wiki/%E1%8E%A4%E1%8E%BE%E1%8F%A5" title="ᎤᎾᏥ – Cherokee" lang="chr" hreflang="chr" data-title="ᎤᎾᏥ" data-language-autonym="ᏣᎳᎩ" data-language-local-name="Cherokee" class="interlanguage-link-target">ᏣᎳᎩ</a></li><li class="interlanguage-link interwiki-chy mw-list-item"><a href="https://chy.wikipedia.org/wiki/H%C3%A9sta%27se" title="Hésta'se – Cheyenne" lang="chy" hreflang="chy" data-title="Hésta'se" data-language-autonym="Tsetsêhestâhese" data-language-local-name="Cheyenne" class="interlanguage-link-target">Tsetsêhestâhese</a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Kar" title="Kar – Turkish" lang="tr" hreflang="tr" data-title="Kar" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target">Türkçe</a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A1%D0%BD%D1%96%D0%B3" title="Сніг – Ukrainian" lang="uk" hreflang="uk" data-title="Сніг" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target">Українська</a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D8%A8%D8%B1%D9%81_%D8%A8%D8%A7%D8%B1%DB%8C" title="برف باری – Urdu" lang="ur" hreflang="ur" data-title="برف باری" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target">اردو</a></li><li class="interlanguage-link interwiki-ug mw-list-item"><a href="https://ug.wikipedia.org/wiki/%D9%82%D8%A7%D8%B1" title="قار – Uyghur" lang="ug" hreflang="ug" data-title="قار" data-language-autonym="ئۇيغۇرچە / Uyghurche" data-language-local-name="Uyghur" class="interlanguage-link-target">ئۇيغۇرچە / Uyghurche</a></li><li class="interlanguage-link interwiki-za mw-list-item"><a href="https://za.wikipedia.org/wiki/Nae" title="Nae – Zhuang" lang="za" hreflang="za" data-title="Nae" data-language-autonym="Vahcuengh" data-language-local-name="Zhuang" class="interlanguage-link-target">Vahcuengh</a></li><li class="interlanguage-link interwiki-vec mw-list-item"><a href="https://vec.wikipedia.org/wiki/Neve" title="Neve – Venetian" lang="vec" hreflang="vec" data-title="Neve" data-language-autonym="Vèneto" data-language-local-name="Venetian" class="interlanguage-link-target">Vèneto</a></li><li class="interlanguage-link interwiki-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/Lumi" title="Lumi – Veps" lang="vep" hreflang="vep" data-title="Lumi" data-language-autonym="Vepsän kel’" data-language-local-name="Veps" class="interlanguage-link-target">Vepsän kel’</a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Tuy%E1%BA%BFt" title="Tuyết – Vietnamese" lang="vi" hreflang="vi" data-title="Tuyết" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target">Tiếng Việt</a></li><li class="interlanguage-link interwiki-vo mw-list-item"><a href="https://vo.wikipedia.org/wiki/Nif" title="Nif – Volapük" lang="vo" hreflang="vo" data-title="Nif" data-language-autonym="Volapük" data-language-local-name="Volapük" class="interlanguage-link-target">Volapük</a></li><li class="interlanguage-link interwiki-fiu-vro mw-list-item"><a href="https://fiu-vro.wikipedia.org/wiki/Lumi" title="Lumi – Võro" lang="vro" hreflang="vro" data-title="Lumi" data-language-autonym="Võro" data-language-local-name="Võro" class="interlanguage-link-target">Võro</a></li><li class="interlanguage-link interwiki-wa mw-list-item"><a href="https://wa.wikipedia.org/wiki/Nive" title="Nive – Walloon" lang="wa" hreflang="wa" data-title="Nive" data-language-autonym="Walon" data-language-local-name="Walloon" class="interlanguage-link-target">Walon</a></li><li class="interlanguage-link interwiki-zh-classical mw-list-item"><a href="https://zh-classical.wikipedia.org/wiki/%E9%9B%AA" title="雪 – Literary Chinese" lang="lzh" hreflang="lzh" data-title="雪" data-language-autonym="文言" data-language-local-name="Literary Chinese" class="interlanguage-link-target">文言</a></li><li class="interlanguage-link interwiki-vls mw-list-item"><a href="https://vls.wikipedia.org/wiki/Sn%C3%AAeuw" title="Snêeuw – West Flemish" lang="vls" hreflang="vls" data-title="Snêeuw" data-language-autonym="West-Vlams" data-language-local-name="West Flemish" class="interlanguage-link-target">West-Vlams</a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Nyebe" title="Nyebe – Waray" lang="war" hreflang="war" data-title="Nyebe" data-language-autonym="Winaray" data-language-local-name="Waray" class="interlanguage-link-target">Winaray</a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E9%9B%AA" title="雪 – Wu" lang="wuu" hreflang="wuu" data-title="雪" data-language-autonym="吴语" data-language-local-name="Wu" class="interlanguage-link-target">吴语</a></li><li class="interlanguage-link interwiki-ts mw-list-item"><a href="https://ts.wikipedia.org/wiki/Gamboko" title="Gamboko – Tsonga" lang="ts" hreflang="ts" data-title="Gamboko" data-language-autonym="Xitsonga" data-language-local-name="Tsonga" class="interlanguage-link-target">Xitsonga</a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%A9%D7%A0%D7%99%D7%99" title="שניי – Yiddish" lang="yi" hreflang="yi" data-title="שניי" data-language-autonym="ייִדיש" data-language-local-name="Yiddish" class="interlanguage-link-target">ייִדיש</a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E9%9B%AA" title="雪 – Cantonese" lang="yue" hreflang="yue" data-title="雪" data-language-autonym="粵語" data-language-local-name="Cantonese" class="interlanguage-link-target">粵語</a></li><li class="interlanguage-link interwiki-diq mw-list-item"><a href="https://diq.wikipedia.org/wiki/Vewre" title="Vewre – Zazaki" lang="diq" hreflang="diq" data-title="Vewre" data-language-autonym="Zazaki" data-language-local-name="Zazaki" class="interlanguage-link-target">Zazaki</a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/Sn%C4%97igs" title="Snėigs – Samogitian" lang="sgs" hreflang="sgs" data-title="Snėigs" data-language-autonym="Žemaitėška" data-language-local-name="Samogitian" class="interlanguage-link-target">Žemaitėška</a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E9%9B%AA" title="雪 – Chinese" lang="zh" hreflang="zh" data-title="雪" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target">中文</a></li><li class="interlanguage-link interwiki-ann mw-list-item"><a href="https://ann.wikipedia.org/wiki/%C3%8Cbot_awo" title="Ìbot awo – Obolo" lang="ann" hreflang="ann" data-title="Ìbot awo" data-language-autonym="Obolo" data-language-local-name="Obolo" class="interlanguage-link-target">Obolo</a></li><li class="interlanguage-link interwiki-btm mw-list-item"><a href="https://btm.wikipedia.org/wiki/Salju" title="Salju – Batak Mandailing" lang="btm" hreflang="btm" data-title="Salju" data-language-autonym="Batak Mandailing" data-language-local-name="Batak Mandailing" class="interlanguage-link-target">Batak Mandailing</a></li><li class="interlanguage-link interwiki-iba mw-list-item"><a href="https://iba.wikipedia.org/wiki/Seleju" title="Seleju – Iban" lang="iba" hreflang="iba" data-title="Seleju" data-language-autonym="Jaku Iban" data-language-local-name="Iban" class="interlanguage-link-target">Jaku Iban</a></li><li class="interlanguage-link interwiki-rsk mw-list-item"><a href="https://rsk.wikipedia.org/wiki/%D0%A8%D0%BD%D1%97%D0%B3" title="Шнїг – Pannonian Rusyn" lang="rsk" hreflang="rsk" data-title="Шнїг" data-language-autonym="Руски" data-language-local-name="Pannonian Rusyn" class="interlanguage-link-target">Руски</a></li><li class="interlanguage-link interwiki-tdd mw-list-item"><a href="https://tdd.wikipedia.org/wiki/%E1%A5%9B%E1%A5%A8%E1%A5%AD%E1%A5%B4" title="ᥛᥨᥭᥴ – Tai Nuea" lang="tdd" hreflang="tdd" data-title="ᥛᥨᥭᥴ" data-language-autonym="ᥖᥭᥰ ᥖᥬᥲ ᥑᥨᥒᥰ" data-language-local-name="Tai Nuea" class="interlanguage-link-target">ᥖᥭᥰ ᥖᥬᥲ ᥑᥨᥒᥰ</a></li></ul> </section> </div> <div class="minerva-footer-logo"><img src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" alt="Wikipedia" width="120" height="18" style="width: 7.5em; height: 1.125em;"/> </div> <ul id="footer-info" class="footer-info hlist hlist-separated"> <li id="footer-info-lastmod"> This page was last edited on 5 November 2024, at 20:18 (UTC).</li> <li id="footer-info-copyright">Content is available under <a class="external" rel="nofollow" href="https://creativecommons.org/licenses/by-sa/4.0/deed.en">CC BY-SA 4.0</a> unless otherwise noted.</li> </ul> <ul id="footer-places" class="footer-places hlist hlist-separated"> <li id="footer-places-privacy"><a 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