EventSpecial Weather Statement SeverityModerate UrgencyExpected CertaintyObserved AreaCentral Black Hills; Southern Black Hills; Hermosa Foothills Effective8/21/2026, 3:24:00 PM CDT Expires8/21/2026, 4:00:00...
Forecasts
SPC Day 1/2/3 outlooks, convective outlooks
EventSevere Thunderstorm Watch SeveritySevere UrgencyFuture CertaintyPossible AreaDane, WI; Green, WI; Iowa, WI; Jefferson, WI; Kenosha, WI; Lafayette, WI; Rock, WI;...
EventSevere Thunderstorm Watch SeveritySevere UrgencyFuture CertaintyPossible AreaClinton, IA; Dubuque, IA; Jackson, IA; Scott, IA; Bureau, IL; Carroll, IL; Henry, IL;...
EventSevere Thunderstorm Watch SeveritySevere UrgencyFuture CertaintyPossible AreaClayton, IA; Grant, WI; Richland, WI Effective8/21/2026, 2:58:00 PM CDT Expires8/21/2026, 6:00:00 PM CDT...
EventSpecial Weather Statement SeverityModerate UrgencyExpected CertaintyObserved AreaSauk; Iowa Effective8/21/2026, 2:53:00 PM CDT Expires8/21/2026, 3:45:00 PM CDT Special Weather Statement issued...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaCrawford, WI; Grant, WI Effective8/21/2026, 2:30:00 PM CDT Expires8/21/2026, 3:45:00 PM CDT Severe Thunderstorm...
EventHeat Advisory SeverityModerate UrgencyExpected CertaintyLikely AreaWestern Osage; Northeast Osage Effective8/21/2026, 2:14:00 PM CDT Expires8/21/2026, 8:00:00 PM CDT Heat Advisory issued...
EventSpecial Weather Statement SeverityModerate UrgencyExpected CertaintyObserved AreaLincoln; Frontier Effective8/21/2026, 1:13:00 PM CDT Expires8/21/2026, 2:15:00 PM CDT Special Weather Statement issued...
EventHeat Advisory SeverityModerate UrgencyExpected CertaintyLikely AreaBriscoe; Hall; Childress; Motley; Cottle; Dickens; King; Garza; Kent; Stonewall Effective8/21/2026, 12:58:00 PM CDT Expires8/21/2026,...
EventHeat Advisory SeverityModerate UrgencyExpected CertaintyLikely AreaFloyd; Crosby Effective8/21/2026, 12:58:00 PM CDT Expires8/21/2026, 9:00:00 PM CDT Heat Advisory issued August 21...