EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaWinona, MN; Buffalo, WI; La Crosse, WI; Trempealeau, WI Effective8/18/2026, 2:36:00 PM CDT Expires8/18/2026,...
Forecasts
SPC Day 1/2/3 outlooks, convective outlooks
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaClayton, IA; Grant, WI Effective8/18/2026, 2:28:00 PM CDT Expires8/18/2026, 3:30:00 PM CDT Severe Thunderstorm...
EventHeat Advisory SeverityModerate UrgencyExpected CertaintyLikely AreaBarton; Butler Effective8/18/2026, 2:15:00 PM CDT Expires8/18/2026, 8:00:00 PM CDT Heat Advisory issued August 18...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaOlmsted, MN; Wabasha, MN Effective8/18/2026, 1:55:00 PM CDT Expires8/18/2026, 3:00:00 PM CDT Severe Thunderstorm...
EventHeat Advisory SeverityModerate UrgencyExpected CertaintyLikely AreaPawnee; Ford; Edwards; Meade Effective8/18/2026, 1:19:00 PM CDT Expires8/18/2026, 8:00:00 PM CDT Heat Advisory issued...
EventHeat Advisory SeverityModerate UrgencyExpected CertaintyLikely AreaFisher; Nolan; Haskell; Throckmorton; Jones; Shackelford; Taylor; Callahan Effective8/18/2026, 12:38:00 PM CDT Expires8/19/2026, 7:00:00 PM...
EventHeat Advisory SeverityModerate UrgencyExpected CertaintyLikely AreaHarper; Woods; Alfalfa; Ellis; Woodward; Major; Roger Mills; Dewey; Custer; Blaine; Beckham; Washita; Caddo; Harmon;...
EventExtreme Heat Warning SeveritySevere UrgencyExpected CertaintyLikely AreaGrant; Kay; Garfield; Noble; Kingfisher; Logan; Payne; Canadian; Oklahoma; Lincoln; Grady; McClain; Cleveland; Pottawatomie;...
EventFlood Warning SeveritySevere UrgencyExpected CertaintyLikely AreaGreeley, NE; Howard, NE; Nance, NE; Valley, NE Effective8/18/2026, 7:12:00 AM CDT Expires8/18/2026, 5:00:00 PM...
EventSpecial Weather Statement SeverityModerate UrgencyExpected CertaintyObserved AreaDivide; Burke; Renville; Bottineau; Rolette; Williams; Mountrail; McHenry; Pierce; Sheridan; Wells; Northwest Ward; Central...