EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaFond du Lac, WI; Sheboygan, WI Effective8/18/2026, 4:52:00 PM CDT Expires8/18/2026, 5:30:00 PM CDT...
Forecasts
SPC Day 1/2/3 outlooks, convective outlooks
EventTornado Warning SeverityExtreme UrgencyImmediate CertaintyObserved AreaColumbia, WI; Sauk, WI Effective8/18/2026, 4:48:00 PM CDT Expires8/18/2026, 5:30:00 PM CDT Tornado Warning issued...
EventSpecial Weather Statement SeverityModerate UrgencyExpected CertaintyObserved AreaNorthern Oconto County; Door; Southern Marinette County Effective8/18/2026, 4:28:00 PM CDT Expires8/18/2026, 5:15:00 PM...
EventTornado Warning SeverityExtreme UrgencyImmediate CertaintyObserved AreaWaushara, WI Effective8/18/2026, 4:11:00 PM CDT Expires8/18/2026, 5:00:00 PM CDT Tornado Warning issued August 18...
EventTornado Warning SeverityExtreme UrgencyImmediate CertaintyObserved AreaGreen Lake, WI; Marquette, WI Effective8/18/2026, 4:12:00 PM CDT Expires8/18/2026, 5:00:00 PM CDT Tornado Warning...
EventHeat Advisory SeverityModerate UrgencyExpected CertaintyLikely AreaOzark Effective8/18/2026, 4:09:00 PM CDT Expires8/19/2026, 4:15:00 PM CDT Heat Advisory issued August 18 at...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaWaushara, WI Effective8/18/2026, 3:55:00 PM CDT Expires8/18/2026, 5:00:00 PM CDT Severe Thunderstorm Warning issued...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaColumbia, WI; Sauk, WI Effective8/18/2026, 3:57:00 PM CDT Expires8/18/2026, 5:15:00 PM CDT Severe Thunderstorm...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaGreen Lake, WI; Marquette, WI Effective8/18/2026, 3:59:00 PM CDT Expires8/18/2026, 5:15:00 PM CDT Severe...
EventSpecial Weather Statement SeverityModerate UrgencyExpected CertaintyObserved AreaDoor Effective8/18/2026, 3:50:00 PM CDT Expires8/18/2026, 4:15:00 PM CDT Special Weather Statement issued August...