EventSevere Thunderstorm Watch SeveritySevere UrgencyFuture CertaintyPossible AreaAllamakee, IA; Chickasaw, IA; Clayton, IA; Fayette, IA; Floyd, IA; Howard, IA; Mitchell, IA;...
Forecasts
SPC Day 1/2/3 outlooks, convective outlooks
EventSevere Thunderstorm Watch SeveritySevere UrgencyFuture CertaintyPossible AreaColumbia, WI; Dane, WI; Dodge, WI; Fond du Lac, WI; Green, WI; Green Lake,...
EventSevere Thunderstorm Watch SeveritySevere UrgencyFuture CertaintyPossible AreaCalumet, WI; Waushara, WI; Winnebago, WI Effective8/18/2026, 2:49:00 PM CDT Expires8/18/2026, 10:00:00 PM CDT...
EventSpecial Weather Statement SeverityModerate UrgencyExpected CertaintyObserved AreaColumbia; Dodge Effective8/18/2026, 2:44:00 PM CDT Expires8/18/2026, 3:45:00 PM CDT Special Weather Statement issued...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaMarinette, WI Effective8/18/2026, 2:44:00 PM CDT Expires8/18/2026, 3:30:00 PM CDT Severe Thunderstorm Warning issued...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaFillmore, MN; Olmsted, MN; Winona, MN Effective8/18/2026, 2:47:00 PM CDT Expires8/18/2026, 3:30:00 PM CDT...
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,...
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...