CINXE.COM
Storm Prediction Center Forecast Products
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <!-- Google tag (gtag.js) --> <script async src="https://www.googletagmanager.com/gtag/js?id=G-VNE5GEVT4X"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-VNE5GEVT4X'); </script> <title>Storm Prediction Center Forecast Products</title> <meta name="DC.title" content="Storm Prediction Center Forecast Products Page" /> <meta name="DC.description" content="SPC Forecast Products Page" /> <meta name="DC.subject" content="Storm Prediction Center forecast products: tornado/severe thunderstorm watches, mesoscale discussions, day 1, 2, 3 convective outlooks, fire weather day 1, 2 outlooks" /> <meta name="DC.date.reviewed" scheme="ISO8601" content="2024-05-25" /> <meta name="DC.date.created" scheme="ISO8601" content="2001-01-01" /> <meta name="DC.format" content="text/html; charset=iso-8859-1" /> <meta name="DC.language" scheme="DCTERMS.RFC1766" content="EN-US" /> <meta name="DC.Distribution" content="Global" /> <meta name="DC.robot" content="all" /> <meta name="DC.creator" content="Storm Prediction Center" /> <meta name="DC.contributor" content="Storm Prediction Center" /> <meta name="DC.publisher" content="NOAA's National Weather Service" /> <link rel="schema.DC" href="//purl.org/dc/elements/1.1/" /> <link rel="schema.DCTERMS" href="//purl.org/dc/terms/" /> <link rel="DC.rights" href="//www.weather.gov/disclaimer.php" /> <meta http-equiv=Content-Type content="text/html; charset=windows-1252"> <meta content="NCEP/SPC Web Team" name="GENERATOR"> <meta http-equiv="Refresh" content="300"> <link href="/misc/spccwi.css" type="text/css" rel="STYLESHEET"> <link href="/nwscwi/main.css" type="text/css" rel="STYLESHEET"> <link rel="alternate" type="application/rss+xml" title="SPC Forecast Products RSS" href="/products/spcrss.xml" /> <link rel="alternate" type="application/rss+xml" title="SPC Tornado/Severe Thunderstorm Watches RSS" href="/products/spcwwrss.xml" /> <link rel="alternate" type="application/rss+xml" title="SPC Mesoscale Discussions RSS" href="/products/spcmdrss.xml" /> <link rel="alternate" type="application/rss+xml" title="SPC Convective Outlooks RSS" href="/products/spcacrss.xml" /> <link rel="alternate" type="application/rss+xml" title="SPC Thunderstorm Outlooks RSS" href="/products/spctstmrss.xml" /> <link rel="alternate" type="application/rss+xml" title="SPC Fire Weather Outlooks RSS" href="/products/spcfwrss.xml" /> <link rel="alternate" type="application/rss+xml" title="SPC PDS Watches RSS" href="/products/spcpdswwrss.xml" /> <link rel="alternate" type="application/rss+xml" title="SPC Multimedia Briefings RSS" href="/products/spcmbrss.xml" /> <META NAME="ROBOTS" CONTENT="ALL"> <meta name="description" content="Severe weather, tornado, thunderstorm, fire weather, storm report, tornado watch, severe thunderstorm watch, mesoscale discussion, convective outlook products from the Storm Prediction Center."> <meta name="keywords" content="severe weather, wx, tornado, thunderstorm, fire weather, mesoscale discussion, tornado watch, severe thunderstorm watch, convective outlook, storm report, tornado research, severe weather research, tornadogenesis, severe thunderstorm, lightning, hail damage, winter weather, wind damage, flash flood, flooding, radar, satellite, GOES, damaging downbursts, damaging winds, microbursts, natural hazard, climatology, NWS, NCEP, SPC, Storm Prediction Center"> <script type="text/javascript" src="/misc/lastMod.js"></script> <script language="javascript" type="text/javascript" src="/new/js/scroll2top.js"></script> </head> <div id="click-to-scroll-up" onclick="ScrollUp()" style=" display:none; position:fixed; right:3pt; top:144pt; background-color:transparent; border:3px solid #999; border-radius:50% 50%; width:27pt; height:27pt; text-align:center; cursor:pointer;"> <img src="/new/images/ArrowScrollUp.png" style="width:auto; height:24pt; border:none; outline:none;" name="Click or tap to scroll to the top" alt="Click-to-scroll-up Image"> </div> <a name="top"></a> <body leftmargin="0" background="/nwscwi/nws_background.gif" topmargin="0" rightmargin="0" marginheight="0" marginwidth="0"> <!-- Header here--> <table cellspacing="0" cellpadding="0" width="100%" background="/nwscwi/topbanner.jpg" border="0"> <tr> <td align="right" height="19"> <a href="#contents"><img height="1" alt="Skip Navigation Links" src="/nwscwi/skipgraphic.gif" width="1" border="0"></a> <a href="//www.weather.gov/" target="_blank"><span class="nwslink">weather.gov</span></a> </td> </tr> </table> <table cellspacing="0" cellpadding="0" width="100%" border="0"> <tr> <td rowspan="2"><a href="//www.noaa.gov/" target="_blank"><img src="/nwscwi/noaaleft.jpg" alt="NOAA logo-Select to go to the NOAA homepage" width="85" height="78" border="0" /></a></td> <td><img src="/nwscwi/noaa_nws_title.jpg" width="500" height="20" border="0" alt="NOAA's National Weather Service"></td> <td rowspan="2" width="100%" background="/nwscwi/ncep_bkgrnd.jpg"> </td> <td rowspan="2" align="right"><a href="//www.weather.gov/" target="_blank"><img src="/nwscwi/nwsright.jpg" alt="Select to go to the NWS homepage" width="85" height="78" border="0" /></a></td> </tr> <tr> <td><a href="/"><img height="58" alt="Storm Prediction Center" src="/nwscwi/spc.jpg" width="500" border="0"></td> </tr> </table> <table cellspacing="0" cellpadding="0" width="100%" background="/nwscwi/navbkgrnd.gif" border="0"> <tr> <td align="left" valign="top" width="94"><img height="23" alt="navigation bar left" src="/nwscwi/navbarleft.jpg" width="94" border="0"></td> <td class="nav" id="menuitem" align="center" width="15%"> <a href="/sitemap.html">Site Map</a></td> <td class="nav" id="menuitem" align="right" width="15%"> <a href="//www.weather.gov/pa/">News</a></td> <td class="nav" id="menuitem" align="right" width="20%"> <a href="//www.weather.gov/organization.php">Organization</a></td> <td width="20%"> </td> <td align="left" class="searchinput" width="20%" nowrap="nowrap"><!-- Begin search code --> <form accept-charset="UTF-8" action="//search.usa.gov/search" id="search_form" method="get"> <div style="margin:0;padding:0;display:inline"> <input name="utf8" type="hidden" value="✓" /> </div> <label for="query" class="yellow">Search for: </label> <input autocomplete="off" class="usagov-search-autocomplete" id="query" name="query" type="text" /> <input type="radio" id="affiliate" name="affiliate" checked="checked" value="spc" id="spc" /> <label class="yellow" for="spc">SPC</label> <input type="radio" id="affiliate" name="affiliate" value="ncep.noaa.gov" id="ncep" /> <label class="yellow" for="ncep">NCEP</label> <input type="radio" id="affiliate" name="affiliate" value="noaa.gov" id="noaa" /> <label class="yellow" for="noaa">All NOAA</label> <input name="commit" type="submit" value="Go" /> </form> <script type="text/javascript"> //<![CDATA[ var usasearch_config = { siteHandle:"spc" }; var script = document.createElement("script"); script.type = "text/javascript"; script.src = "//search.usa.gov/javascripts/remote.loader.js"; document.getElementsByTagName("head")[0].appendChild(script); //]]> </script> </td><!-- End search code --> <td width="10%"> </td> <td align="right" valign="bottom" width="24"><img src="/nwscwi/navbarendcap.jpg" alt="navigation bar end cap" width="24" height="23" border="0" /></td> </tr> </table> <table cellspacing="0" cellpadding="0" width="670" border="0"> <tr valign="top"> <td width="130" bgcolor="#0a2390"><br /> <!-- Left menu here--> <!--Use google lib for jquery --> <script type="text/javascript" src="/misc/js/jquery.min.js"></script> <script type="text/javascript" src="/misc/js/nwsexit-spc.js"></script> <table cellspacing="0" cellpadding="2" width="130" border="0"> <tr valign="top"> <td class="searchinput" align="left"> <form method="post" action="//forecast.weather.gov/zipcity.php"> <div ID="Layer2" STYLE="position:absolute; width:200px; height:115px; z-index:2; visibility: hidden">Search by city or zip code. Press enter or select the go button to submit request</div> <span class="yellow"><label for="city_state">Local forecast by<br />"City, St" or "ZIP"</label></span><br /> <input type="text" id="city_state" name="inputstring" size="10" value="City, St" onfocus="this.value='';" /> <input type="submit" name="Go2" value="Go" /> </form> </td> </tr> <tr> <td class="white" id="menuitem"> <hr width="90%"/> <div style="text-align:center;"> <span><a href="https://www.facebook.com/NWSSPC" target="SPC_Facebook" title="NOAA NWS Storm Prediction Center Facebook"><img src="/misc/facebook_logo.gif" style="border: 0px;" /><br />SPC on Facebook</a></span> <hr width="80%"/> <span><a href="https://twitter.com/NWSSPC" target="_blank" title="NOAA NWS Storm Prediction Center Twitter"><img src="/misc/twitter-bird-light-bgs.png" style="border: 0px;height: 40px;width: 40px;vertical-align: middle;" />@NWSSPC</a></span> <hr width="80%"/> <span class="yellow"><a href="//www.ncep.noaa.gov/newsletter/" target="NCEP_Newsletter">NCEP Quarterly Newsletter</a></span> </div> <hr width="90%"/> <a href="/"><span class="yellow">Home</span></a> (<a href="/classic.html" target="_blank"><span class="yellow">Classic</span></a>)<br /> <span class="yellow">SPC Products</span><br /> <a href="/products/">All SPC Forecasts</a><br /> <a href="/products/watch/">Current Watches</a><br /> <a href="/products/md/">Meso. Discussions</a><br /> <a href="/products/outlook/">Conv. Outlooks</a><br /> <a href="/products/exper/enhtstm/">Tstm. Outlooks</a><br /> <a href="/products/fire_wx/overview.html">Fire Wx Outlooks</a><br /> <a href="/products/spcrss.xml"><img src="/nwscwi/xml2.gif" alt="XML logo" border="0" height="13" width="13"></a> <a href="/aboutrss.html">RSS Feeds</a><br /> <a href="//www.weather.gov/subscribe/">E-Mail Alerts</a><br /> <span class="yellow">Weather Information</span><br /> <a href="/climo/online/">Storm Reports</a><br /> <a href="/exper/reports/">Storm Reports Dev.</a><br /> <a href="//www.weather.gov/" target="NWS_Hazards">NWS Hazards Map</a><br /> <a href="//www.weather.gov/Radar/" target="radar_window">National RADAR</a><br /> <a href="/archive/">Product Archive</a><br /> <A href="//www.weather.gov/nwr/" target="NWR_window">NOAA Weather Radio</a><br /> <span class="yellow">Research</span><br /> <a href="/products/exper/">Non-op. Products</a><br /> <a href="/exper/">Forecast Tools</a><br /> <a href="/exper/archive/events/">Svr. Tstm. Events</a><br /> <a href="/publications/">SPC Publications</a><br /> <a href="//hwt.nssl.noaa.gov/" target="NOAA_HWT">SPC-NSSL HWT</a><br /> <span class="yellow">Education & Outreach</span><br /> <a href="/misc/aboutus.html">About the SPC</a><br /> <a href="/faq/">SPC FAQ</a><br /> <a href="/faq/tornado/">About Tornadoes</a><br /> <a href="/misc/AbtDerechos/derechofacts.htm">About Derechos</a><br /> <a href="/exper/spcousom">Video Lecture Series</a><br /> <a href="/wcm/">WCM Page</a><br /> <a href="/efscale/">Enh. Fujita Page</a><br /> <a href="/history/early.html">Our History</a><br /> <a href="//www.nws.noaa.gov/cgi-bin/nwsexit.pl?url=//nwc.ou.edu/tours/" target="_blank">Public Tours</a><br /> <span class="yellow">Misc.</span><br /> <a href="/staff/">Staff</a><br /> <!-- <a href="/misc/links.html">Links</a><br /> --> <span class="yellow">Contact Us</span><br /> <a href="/misc/feedback.html">SPC Feedback</a><br /><br /> </td> </tr> <tr> <td align="center"><a href="//www.USA.gov/" target="_BLANK"><img src="/misc/usagov_logo_color_110.png" alt="USA.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services." width="110" height="110" border="0"></a></td> </tr> </table> </td> <td valign="top" align="center" width="540"><a name="contents"></a><br /> <table cellspacing="5" cellpadding="0" width="525" border="0"> <tr><td colspan="2" align="center" class="zz" nowrap>Forecast Products</td></tr> <tr><th colspan="2" align="left" valign="top">Current Weather Watches</th> </tr> <tr> <td align="left" valign="center"> This is the current graphic showing any severe thunderstorm and tornado watches which are in effect over the contiguous United States. Please read about the <a href="/misc/about.html#Severe Weather Watches"> the purpose of our watches</a> for further information. Details on all valid watches may be found on our <a href="watch/">Current Convective Watches page</a>. </td> <td> <a href="watch/"> <img src="watch/validww_sm.gif" height="120" width="160" alt="Valid SPC Convective Watches graphic and text"> </a> <br /> </td> </tr> <tr><th colspan="2" align="left">Current Mesoscale Discussions</th> </tr> <tr> <td align="left" valign="center"> This is the current graphic showing any mesoscale discussions (MD's) which are in effect over the contiguous United States. Please read the description of the <a href="/misc/about.html#Mesoscale Discussions"> purpose of our MD's</a> for further information. Details on all valid MD's may be found on our <a href="md/">Current Mesoscale Discussions page</a>. </td> <td> <a href="md/"> <img src="md/validmd_sm.gif" height="120" width="160" alt="Valid Mesoscale Discussion graphics and text"> </a> <br /> </td> </tr> <tr> <th colspan="2" align="left">Convective Outlooks</th> </tr> <tr> <td rowspan="2" valign="center" align="left"> This is today's forecast for organized severe thunderstorms over the contiguous United States. Please read the <a href="/misc/about.html#Convective Outlooks">description of the risk categories</a> for further information. You may find the <a href="outlook/day1otlk.html">latest Day 1 Outlook</a> available as well as <a href="outlook/">all Outlooks issued today</a> online. </td> <td align="center"><strong>Today's Outlook</strong></td> </tr> <tr> <td> <a href="outlook/day1otlk.html"> <img src="outlook/day1otlk_sm.gif" height="120" width="160" alt="Day 1 Convective Outlook graphic and text"> </a> </td> </tr> <tr> <td rowspan="2" valign="center" align="left"> This is tomorrow's forecast for organized severe thunderstorms over the contiguous United States. Please read the <a href="/misc/about.html#Convective Outlooks">description of the risk categories</a> for further information. The <a href="outlook/day2otlk.html">latest Day 2 Outlook</a> is available as well as <a href="outlook/">all Outlooks</a> that have been issued today. </td> <td align="center"><strong>Tomorrow's Outlook</strong></td> </tr> <tr> <td> <a href="outlook/day2otlk.html"> <img src="outlook/day2otlk_sm.gif" height="120" width="160" alt="Current Day 2 Convective Outlook graphic and text"> </a> </td> </tr> <tr> <td rowspan="2" valign="center" align="left"> This is the day after tomorrow's (day 3) forecast for organized severe thunderstorms over the contiguous United States. Please read the <a href="/misc/about.html#Convective Outlooks">description of the risk categories</a> for further information. The <a href="outlook/day3otlk.html">latest Day 3 Outlook</a> is available as well as <a href="outlook/">all Outlooks</a> that have been issued today. </td> <td align="center"><strong>Day 3 Outlook</strong></td> </tr> <tr> <td> <a href="outlook/day3otlk.html"> <img src="outlook/day3otlk_sm.gif" height="120" width="160" alt="Current Day 3 Convective Outlook graphic and text"> </a> </td> </tr> <tr> <td rowspan="2" valign="center" align="left"> This is the day 4-8 forecast for organized severe thunderstorms over the contiguous United States. The <a href="exper/day4-8/">latest Day 4-8 Outlook</a> is available as well as <a href="outlook/">all Outlooks</a> that have been issued today. <span class="highlight">Note:</span> A severe weather area depicted in the Day 4-8 period indicates a 30% or higher probability for severe thunderstorms (e.g. a 30% chance that a severe thunderstorm will occur within 25 miles of any point). </td> <td align="center"><strong>Day 4-8 Outlook</strong></td> </tr> <tr> <td> <a href="exper/day4-8/"> <img src="exper/day4-8/day48prob_small.gif" height="120" width="160" alt="Current Day 4-8 Convective Outlook graphic and text"> </a> <br /> </td> </tr> <tr> <td rowspan="2" valign="center" align="left"> The <a href="exper/enhtstm/">Thunderstorm Outlooks</a> depict the probability of thunderstorm across the contiguous United States in 4 or 8 hour time periods. The probabilistic forecast directly expresses the best estimate of a thunderstorm occurring within 12 miles of a point. The three probabilistic forecast thresholds are: 10, 40, and 70 percent. </td> <td align="center"><strong>Thunderstorm Outlook</strong></td> </tr> <tr> <td> <a href="exper/enhtstm/"> <img src="exper/enhtstm/enh_small.gif" height="120" width="160" alt="Current Thunderstorm Outlook graphic and text"> </a> <br /> </td> </tr> <tr><th colspan="2" align="left">Fire Weather Outlooks</th></tr> <tr> <td rowspan="2" valign="center" align="left"> This is today's forecast for organized wildfires over the contiguous United States. Please read the <a href="/misc/about.html#FireWx">description of the risk categories</a> for further information about this product. </td> <td align="center"><strong>Today's Outlook</strong></td> </tr> <tr> <td> <a href="fire_wx/"> <img src="fire_wx/day1fireotlk_sm.png" width="160" height="120" alt="Current Day 1 Forest Fire Forecast"> </a> </td> </tr> <tr> <td rowspan="2" valign="center" align="left"> This is tomorrow's forecast for organized wildfires over the contiguous United States. Please read the <a href="/misc/about.html#FireWx">description of the risk categories</a> for further information about this product. </td> <td align="center"><B>Tomorrow's Outlook</b></td> </tr> <tr> <td> <a href="fire_wx/#Day2"> <img src="fire_wx/day2fireotlk_sm.png" width="160" height="120" alt="Current Day 2 Forest Fire Forecast"> </a> <br /> </td> </tr> <tr> <td rowspan="2" valign="center" align="left"> This is day 3-8 forecast for organized wildfires over the contiguous United States. Please read the <a href="/misc/about.html#FireWx">description of the risk categories</a> for further information about this product. </td> <td align="center"><B>Day 3-8 Outlook</b></td> </tr> <tr> <td> <a href="/products/exper/fire_wx/"> <img src="/products/exper/fire_wx/day3-8fireotlk_sm.png" width="160" height="120" alt="Current Day 3-8 Forest Fire Forecast"> </a> <br /> </td> </tr> <tr><th colspan="2" align="left">Watch, Warning and Advisory Display</th></tr> <tr> <td> Current watches, warnings and advisories issued by the agencies of the National Weather Service. </td> <td> <a href="wwa/"> <img src="/products/wwa/wwa_new_sm.gif" alt="Watch, Warning Display" width="160" height="120"> </a> <br /> </td> </tr> </table> <table cellspacing="2" cellpadding="2" border="0"> <tr align="center"> <td> <font size="-1"> <a href="#top">Top</a>/<a href="/">Home</a> </font> </td> </tr> </table> <!-- End of main body --> <!-- Footers begin here--> <center> <table cellspacing="2" cellpadding="2" border="0"> <tr align="center"> <td>Weather Topics:<br /> <a href="/products/watch/">Watches</a>, <a href="/products/md/">Mesoscale Discussions</a>, <a href="/products/outlook/">Outlooks</a>, <a href="/products/fire_wx/">Fire Weather</a>, <a href="/products/">All Products</a>, <a href="/misc/feedback.html">Contact Us</a></td> </tr> </table> <table cellspacing="6" cellpadding="0" width="98%" border="0"> <tr> <td colSpan="3"><hr></td> </tr> <tr valign="top" align="left"> <td class="gray"> <a href="//www.noaa.gov/"><span class="gray">NOAA</span></a> / <a href="//www.nws.noaa.gov/"><span class="gray">National Weather Service</span></a><br /> <a href="//www.ncep.noaa.gov/"><span class="gray">National Centers for Environmental Prediction</span></a><br /> <a href="/"><span class="gray">Storm Prediction Center</span></a><br /> 120 David L. Boren Blvd.<br /> Norman, OK 73072 U.S.A.<br /> <a href="mailto:spc.feedback@noaa.gov?subject=[SPC web feedback]"><span class="gray">spc.feedback@noaa.gov</span></a><br /> Page last modified: May 25, 2024</td> <td align="left"> <a href="//www.weather.gov/disclaimer"> <span class="gray">Disclaimer</span></a><br /> <a href="//www.cio.noaa.gov/services_programs/info_quality.html"> <span class="gray">Information Quality</span></a><br /> <a href="//www.weather.gov/help"> <span class="gray">Help</span></a><br /> <a href="//www.weather.gov/glossary"> <span class="gray">Glossary</span></a> </td> <td align="right"> <a href="//www.weather.gov/privacy"> <span class="gray">Privacy Policy</span></a><br /> <a href="//www.rdc.noaa.gov/%7Efoia/"> <span class="gray">Freedom of Information Act (FOIA)</span></a><br /> <a href="//www.weather.gov/about"> <span class="gray">About Us</span></a><br /> <a href="//www.weather.gov/careers"> <span class="gray">Career Opportunities</span></a> </td> </tr> </table> <script type="text/javascript" async="true" id="_fed_an_ua_tag" src="https://dap.digitalgov.gov/Universal-Federated-Analytics-Min.js?agency=DOC&subagency=SPC&pua=UA-52727918-1"></script> <script type="text/javascript"> if (typeof jQuery == 'undefined') { document.write(unescape("%3Cscript async src='/misc/js/jquery.min.js' type='text/javascript'%3E%3C/script%3E")); } </script> <script async type="text/javascript" src="/misc/js/nwsexit-spc-min.js"></script> </center> <!-- Footers end here--> </table> </body> </html>