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<input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 18 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-18" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">18 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Subtropik_siklon" title="Subtropik siklon – Azerbaijani" lang="az" hreflang="az" data-title="Subtropik siklon" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%89%E0%A6%AA%E0%A6%95%E0%A7%8D%E0%A6%B0%E0%A6%BE%E0%A6%A8%E0%A7%8D%E0%A6%A4%E0%A7%80%E0%A6%AF%E0%A6%BC_%E0%A6%98%E0%A7%82%E0%A6%B0%E0%A7%8D%E0%A6%A3%E0%A6%BF%E0%A6%9D%E0%A6%A1%E0%A6%BC" title="উপক্রান্তীয় ঘূর্ণিঝড় – Bangla" lang="bn" hreflang="bn" data-title="উপক্রান্তীয় ঘূর্ণিঝড়" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Subtropischer_Wirbelsturm" title="Subtropischer Wirbelsturm – German" lang="de" hreflang="de" data-title="Subtropischer Wirbelsturm" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://en.wikipedia.org/wiki/Subtropical_cyclone" title="Subtropical cyclone – English" lang="en" hreflang="en" data-title="Subtropical cyclone" data-language-autonym="English" data-language-local-name="English" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Cicl%C3%B3n_subtropical" title="Ciclón subtropical – Spanish" lang="es" hreflang="es" data-title="Ciclón subtropical" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%DA%86%D8%B1%D8%AE%D9%86%D8%AF_%D8%AC%D9%86%D8%A8%E2%80%8C%D8%AD%D8%A7%D8%B1%D9%87%E2%80%8C%D8%A7%DB%8C" title="چرخند جنب‌حاره‌ای – Persian" lang="fa" hreflang="fa" data-title="چرخند جنب‌حاره‌ای" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Cyclone_subtropical" title="Cyclone subtropical – French" lang="fr" hreflang="fr" data-title="Cyclone subtropical" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Siklon_Subtropis" title="Siklon Subtropis – Indonesian" lang="id" hreflang="id" data-title="Siklon Subtropis" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Siklon_subtropika" title="Siklon subtropika – Malay" lang="ms" hreflang="ms" data-title="Siklon subtropika" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Subtropische_cycloon" title="Subtropische cycloon – Dutch" lang="nl" hreflang="nl" data-title="Subtropische cycloon" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E4%BA%9C%E7%86%B1%E5%B8%AF%E4%BD%8E%E6%B0%97%E5%9C%A7" title="亜熱帯低気圧 – Japanese" lang="ja" hreflang="ja" data-title="亜熱帯低気圧" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Subtropisk_syklon" title="Subtropisk syklon – Norwegian Nynorsk" lang="nn" hreflang="nn" data-title="Subtropisk syklon" data-language-autonym="Norsk nynorsk" data-language-local-name="Norwegian Nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Ciclone_subtropical" title="Ciclone subtropical – Portuguese" lang="pt" hreflang="pt" data-title="Ciclone subtropical" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D1%83%D0%B1%D1%82%D1%80%D0%BE%D0%BF%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9_%D1%86%D0%B8%D0%BA%D0%BB%D0%BE%D0%BD" title="Субтропический циклон – Russian" lang="ru" hreflang="ru" data-title="Субтропический циклон" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Subtropikal_siklon" title="Subtropikal siklon – Turkish" lang="tr" hreflang="tr" data-title="Subtropikal siklon" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A1%D1%83%D0%B1%D1%82%D1%80%D0%BE%D0%BF%D1%96%D1%87%D0%BD%D0%B8%D0%B9_%D1%86%D0%B8%D0%BA%D0%BB%D0%BE%D0%BD" title="Субтропічний циклон – Ukrainian" lang="uk" hreflang="uk" data-title="Субтропічний циклон" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Xo%C3%A1y_thu%E1%BA%ADn_c%E1%BA%ADn_nhi%E1%BB%87t_%C4%91%E1%BB%9Bi" title="Xoáy thuận cận nhiệt đới – Vietnamese" lang="vi" hreflang="vi" data-title="Xoáy thuận cận nhiệt đới" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%89%AF%E7%86%B1%E5%B8%B6%E6%B0%A3%E6%97%8B" title="副熱帶氣旋 – Chinese" lang="zh" hreflang="zh" data-title="副熱帶氣旋" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q2331851#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Change links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet 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id="siteSub" class="noprint">From Simple English Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><span class="mw-redirectedfrom">(Redirected from <a href="/w/index.php?title=Subtropical_storm&redirect=no" class="mw-redirect" title="Subtropical storm">Subtropical storm</a>)</span></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Subtropical_Storm_Andrea_(2007).JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/06/Subtropical_Storm_Andrea_%282007%29.JPG/220px-Subtropical_Storm_Andrea_%282007%29.JPG" decoding="async" width="220" height="283" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/06/Subtropical_Storm_Andrea_%282007%29.JPG/330px-Subtropical_Storm_Andrea_%282007%29.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/06/Subtropical_Storm_Andrea_%282007%29.JPG/440px-Subtropical_Storm_Andrea_%282007%29.JPG 2x" data-file-width="5600" data-file-height="7200" /></a><figcaption><a href="/wiki/Subtropical_Storm_Andrea_(2007)" title="Subtropical Storm Andrea (2007)">Subtropical Storm Andrea</a> from <a href="/wiki/2007_Atlantic_hurricane_season" title="2007 Atlantic hurricane season">2007</a>.</figcaption></figure> <p>A <b>subtropical cyclone</b> (also known as a <b>subtropical storm</b>) is a <a href="https://simple.wiktionary.org/wiki/cyclone" class="extiw" title="wikt:cyclone">cyclonic</a> <a href="/wiki/Weather" title="Weather">weather</a> storm. Subtropical cyclones have wide wind <a href="/wiki/Pattern" title="Pattern">patterns</a> with the winds getting stronger as they get farther away from the centre of the storm. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Terms">Terms</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Subtropical_cyclone&veaction=edit&section=1" title="Change section: Terms" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Subtropical_cyclone&action=edit&section=1" title="Edit section's source code: Terms"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A subtropical cyclone is more likely to be a tropical cyclone than an <a href="/wiki/Extratropical_cyclone" title="Extratropical cyclone">extratropical cyclone</a>. Subtropical cyclones are only found in the northern <a href="/wiki/Atlantic_Ocean" title="Atlantic Ocean">Atlantic Ocean</a> and in the eastern <a href="/wiki/Pacific_Ocean" title="Pacific Ocean">Pacific Ocean</a>. Like normal tropical cyclones, most subtropical cyclones have maximum wind <a href="/wiki/Speed" title="Speed">speeds</a> of at least 39 <a href="/wiki/Mph" class="mw-redirect" title="Mph">mph</a> to 74 mph (60 <a href="/wiki/Km/h" class="mw-redirect" title="Km/h">km/h</a> to 110 km/h). Subtropical cyclones that have wind speeds less than 39 mph are known as "subtropical depressions".<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> There is no such thing as a "Subtropical Hurricane". If there is a previously subtropical storm with this intensity, it is either fully tropical or extratropical. </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Subtropical_cyclone&veaction=edit&section=2" title="Change section: History" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Subtropical_cyclone&action=edit&section=2" title="Edit section's source code: History"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Gustav_09_sep_2002_1805Z.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Gustav_09_sep_2002_1805Z.jpg/220px-Gustav_09_sep_2002_1805Z.jpg" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Gustav_09_sep_2002_1805Z.jpg/330px-Gustav_09_sep_2002_1805Z.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Gustav_09_sep_2002_1805Z.jpg/440px-Gustav_09_sep_2002_1805Z.jpg 2x" data-file-width="6000" data-file-height="6000" /></a><figcaption><a href="/wiki/Hurricane_Gustav_(2002)" class="mw-redirect" title="Hurricane Gustav (2002)">Subtropical Storm Gustav</a> in 2002, the first system to be given a name as a subtropical cyclone</figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Naming_issue">Naming issue</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Subtropical_cyclone&veaction=edit&section=3" title="Change section: Naming issue" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Subtropical_cyclone&action=edit&section=3" title="Edit section's source code: Naming issue"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>During the <a href="/wiki/1950s" title="1950s">1950s</a> and <a href="/wiki/1960s" title="1960s">60s</a>, subtropical cyclones were simply called "semi-tropical". There was much discussion between <a href="/wiki/Meteorology" title="Meteorology">meteorologists</a> in the late <a href="/wiki/1960" title="1960">1960s</a> as to what a subtropical cyclone was. So, in <a href="/wiki/1972" title="1972">1972</a>, the <a href="/wiki/National_Hurricane_Center" title="National Hurricane Center">National Hurricane Center</a> (NHC) officially classified the type under a new category different from actual <a href="/wiki/Tropical_cyclones" class="mw-redirect" title="Tropical cyclones">tropical cyclones</a>. During the <a href="/wiki/1970s" title="1970s">1970s</a>, the NHC began making a new list of names, separate for subtropical cyclones, although that process was soon canceled because it was rejected by many <a href="/wiki/Scientist" title="Scientist">scientists</a>. After that, subtropical storms were just numbered, such as Hurricane Karen from <a href="/wiki/2001" title="2001">2001</a>, which was originally named <i>Subtropical Storm One</i>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> But in <a href="/wiki/2002" title="2002">2002</a>, a <a href="/wiki/Policy" class="mw-disambig" title="Policy">policy</a> change had tropical and subtropical storms share the same list of names for the whole season, which started with <a href="/wiki/Subtropical_Storm_Nicole_(2004)" title="Subtropical Storm Nicole (2004)">Subtropical Storm Nicole</a> in <a href="/wiki/2004" title="2004">2004</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Naming">Naming</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Subtropical_cyclone&veaction=edit&section=4" title="Change section: Naming" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Subtropical_cyclone&action=edit&section=4" title="Edit section's source code: Naming"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In the <a href="/wiki/2004_Atlantic_hurricane_season" title="2004 Atlantic hurricane season">2004 Atlantic hurricane season</a>, the NHC watched the first named subtropical cyclone: <a href="/wiki/Subtropical_Storm_Nicole_(2004)" title="Subtropical Storm Nicole (2004)">Subtropical Storm Nicole</a>. Later, another unnamed subtropical cyclone was discovered in the <a href="/wiki/2005_Atlantic_hurricane_season" title="2005 Atlantic hurricane season">2005 Atlantic hurricane season</a> after someone re-read the records. Although it could have been named, the subtropical storm remained without a name because it was only identified a long time after the official season had finished.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> A third subtropical cyclone was named <a href="/wiki/Subtropical_Storm_Andrea_(2007)" title="Subtropical Storm Andrea (2007)">Subtropical Storm Andrea</a>, which formed on <a href="/wiki/May_9" title="May 9">May 9</a> just before the start of the <a href="/wiki/2007_Atlantic_hurricane_season" title="2007 Atlantic hurricane season">2007 Atlantic hurricane season</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Formation">Formation</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Subtropical_cyclone&veaction=edit&section=5" title="Change section: Formation" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Subtropical_cyclone&action=edit&section=5" title="Edit section's source code: Formation"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:STS_Nicole_10_oct_2004_1530Z.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/STS_Nicole_10_oct_2004_1530Z.jpg/220px-STS_Nicole_10_oct_2004_1530Z.jpg" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ee/STS_Nicole_10_oct_2004_1530Z.jpg/330px-STS_Nicole_10_oct_2004_1530Z.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ee/STS_Nicole_10_oct_2004_1530Z.jpg/440px-STS_Nicole_10_oct_2004_1530Z.jpg 2x" data-file-width="600" data-file-height="600" /></a><figcaption>Satellite image of <a href="/wiki/Subtropical_Storm_Nicole_(2004)" title="Subtropical Storm Nicole (2004)">Subtropical Storm Nicole</a> in <a href="/wiki/2004_Atlantic_hurricane_season" title="2004 Atlantic hurricane season">2004</a>.</figcaption></figure> <p>A subtropical cyclone can form in many ways: </p> <ul><li>Change from an <a href="/wiki/Extratropical_cyclone" title="Extratropical cyclone">extratropical cyclone</a> to a <a href="/wiki/Tropical_cyclone" title="Tropical cyclone">tropical cyclone</a> (or the other way round)</li> <li>An upper-level low meets a cold core and deep convection.</li> <li>From a big <a href="/wiki/Mesocyclone" title="Mesocyclone">mesocyclone</a> with a cold core.</li> <li>A tropical wave forming over sea surface temperatures of 23 degrees.</li> <li>From the <a href="https://simple.wiktionary.org/wiki/remnant" class="extiw" title="wikt:remnant">remnants</a> of a tropical cyclone after <a href="/wiki/Landfall_(meteorology)" title="Landfall (meteorology)">landfall</a> and losing its tropical characteristics.</li></ul> <div class="mw-heading mw-heading2"><h2 id="Types">Types</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Subtropical_cyclone&veaction=edit&section=6" title="Change section: Types" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Subtropical_cyclone&action=edit&section=6" title="Edit section's source code: Types"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Alex_2016-01-13_1530Z.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cc/Alex_2016-01-13_1530Z.jpg/220px-Alex_2016-01-13_1530Z.jpg" decoding="async" width="220" height="282" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cc/Alex_2016-01-13_1530Z.jpg/330px-Alex_2016-01-13_1530Z.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cc/Alex_2016-01-13_1530Z.jpg/440px-Alex_2016-01-13_1530Z.jpg 2x" data-file-width="5000" data-file-height="6400" /></a><figcaption>Subtropical Storm Alex in <a href="/wiki/2016_Atlantic_hurricane_season" title="2016 Atlantic hurricane season">2016</a>.</figcaption></figure> <div class="mw-heading mw-heading3"><h3 id="Upper-level_low">Upper-level low</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Subtropical_cyclone&veaction=edit&section=7" title="Change section: Upper-level low" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Subtropical_cyclone&action=edit&section=7" title="Edit section's source code: Upper-level low"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The most common type of a subtropical cyclone is an upper-level cold low with circulation expanding to the surface <a href="https://simple.wiktionary.org/wiki/layer" class="extiw" title="wikt:layer">layer</a> and strongest winds usually happening at a <a href="/wiki/Radius" title="Radius">radius</a> of about 100 miles/160 kilometers or more from the center. </p> <div class="mw-heading mw-heading3"><h3 id="Mesoscale_low">Mesoscale low</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Subtropical_cyclone&veaction=edit&section=8" title="Change section: Mesoscale low" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Subtropical_cyclone&action=edit&section=8" title="Edit section's source code: Mesoscale low"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Another type of a subtropical cyclone is a <a href="/wiki/Mesocyclone" title="Mesocyclone">mesoscale low</a> forming in or near an area of horizontal <a href="/wiki/Wind_shear" title="Wind shear">wind shear</a>, also known as a "dying frontal zone", with radius of strongest winds normally less than 30 miles (50 kilometers). The entire circulation may originally have a <a href="/wiki/Diameter" title="Diameter">diameter</a> of less than 100 miles/160 kilometres. These cyclones usually last for a short time. They may be either cold core or warm core, and for some time in <a href="/wiki/1972" title="1972">1972</a> this type of subtropical cyclone was called a "neutercane". As of <a href="/wiki/2006" title="2006">2006</a>, the warm core type was moved under the definition of the term, tropical cyclone; and removed from the subtropical cyclone definition.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Related_pages">Related pages</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Subtropical_cyclone&veaction=edit&section=9" title="Change section: Related pages" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Subtropical_cyclone&action=edit&section=9" title="Edit section's source code: Related pages"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Tropical_cyclone" title="Tropical cyclone">Tropical cyclone</a></li> <li><a href="/wiki/Extratropical_cyclone" title="Extratropical cyclone">Extratropical cyclone</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Subtropical_cyclone&veaction=edit&section=10" title="Change section: References" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Subtropical_cyclone&action=edit&section=10" title="Edit section's source code: References"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r9724317">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text">National Hurricane Center. <a rel="nofollow" class="external text" href="http://www.nhc.noaa.gov/aboutgloss.shtml">Glossary of NHC terms.</a> Retrieved on <a href="/wiki/May_5" title="May 5">May 5</a>, <a href="/wiki/2007" title="2007">2007</a>.</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text">National Hurricane Center. <a rel="nofollow" class="external text" href="http://www.nhc.noaa.gov/archive/2001/mar/al132001.fstadv.001.html">Subtropical Storm One Public Advisory from 2001.</a> Retrieved on <a href="/wiki/May_5" title="May 5">May 5</a>, <a href="/wiki/2007" title="2007">2007</a>.</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text">Jack Beven and Eric S. Blake. <a rel="nofollow" class="external text" href="http://www.nhc.noaa.gov/pdf/TCR-AL212005_Unnamed.pdf">Unnamed Subtropical Storm.</a> Retrieved on <a href="/wiki/May_5" title="May 5">May 5</a>, <a href="/wiki/2007" title="2007">2007</a>.</span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text">NOAA. <a rel="nofollow" class="external text" href="http://www.ofcm.gov/homepage/text/spc_proj/ihc/action-items.pdf#search=%22subtropical%20cyclone%20definition%20change%20NHC%22">Interdepartmental Hurricane Conference</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20141127062342/http://www.ofcm.gov/homepage/text/spc_proj/ihc/action-items.pdf#search=%22subtropical%20cyclone%20definition%20change%20NHC%22">Archived</a> 2014-11-27 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> Retrieved <a href="/wiki/October_10" title="October 10">October 10</a>, <a href="/wiki/2006" title="2006">2006</a>.</span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Other_websites">Other websites</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Subtropical_cyclone&veaction=edit&section=11" title="Change section: Other websites" class="mw-editsection-visualeditor"><span>change</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Subtropical_cyclone&action=edit&section=11" title="Edit section's source code: Other websites"><span>change source</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="http://www.aoml.noaa.gov/hrd/tcfaq/A5.html">NOAA FAQ on tropical cyclones</a>.</li> <li><a rel="nofollow" class="external text" href="https://www.usatoday.com/weather/hurricane/2003-04-22-subtropical-storms_x.htm">USA Today article on subtropical storms</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110123014906/http://www.usatoday.com/weather/hurricane/2003-04-22-subtropical-storms_x.htm">Archived</a> 2011-01-23 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>.</li> <li><a rel="nofollow" class="external text" href="https://earthobservatory.nasa.gov/NaturalHazards/shownh.php3?img_id=12524">NASA Earth Observatory: Subtropical Storm Nicole</a><sup class="noprint Inline-Template"><span style="white-space: nowrap;">[<i><a href="/wiki/Wikipedia:Link_rot" title="Wikipedia:Link rot"><span title=" Dead link since June 2021">permanent dead link</span></a></i>]</span></sup></li> <li><a rel="nofollow" class="external text" href="http://www.thestormtrack.com/2007/05/an_early_start_to_the_season.php">TheStormTrack.com: An Early Start to the Season?</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20070823184221/http://www.thestormtrack.com/2007/05/an_early_start_to_the_season.php">Archived</a> 2007-08-23 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></li></ul> <table style="margin:0 auto;text-align:center;" align="center" class="toccolours"> <tbody><tr> <th style="background:#cceeff"><b><a href="/wiki/Cyclone" title="Cyclone">Cyclones</a> and <a href="/wiki/Tropical_cyclone" title="Tropical cyclone">Tropical cyclones</a> of the World</b> </th></tr> <tr> <td style="font-size:90%;"><a href="/wiki/Cyclone" title="Cyclone">Cyclone</a> - <a href="/wiki/Tropical_cyclone" title="Tropical cyclone">Tropical</a> - <a href="/wiki/Extratropical_cyclone" title="Extratropical cyclone">Extratropical</a> - <a class="mw-selflink selflink">Subtropical</a> - <a href="/wiki/Mesocyclone" title="Mesocyclone">Mesocyclone</a> - <a href="/wiki/Polar_cyclone" title="Polar cyclone">Polar cyclone</a> - <a href="/wiki/Polar_low" title="Polar low">Polar low</a> </td></tr></tbody></table>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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