EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBox Butte, NE; Dawes, NE Effective8/21/2026, 6:55:00 PM CDT Expires8/21/2026, 8:00:00 PM CDT Severe...
Forecasts
SPC Day 1/2/3 outlooks, convective outlooks
EventSpecial Weather Statement SeverityModerate UrgencyExpected CertaintyObserved AreaShelby; San Augustine Effective8/21/2026, 6:39:00 PM CDT Expires8/21/2026, 7:30:00 PM CDT Special Weather Statement...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaOutagamie, WI; Waupaca, WI Effective8/21/2026, 6:40:00 PM CDT Expires8/21/2026, 7:45:00 PM CDT Severe Thunderstorm...
EventSpecial Weather Statement SeverityModerate UrgencyExpected CertaintyObserved AreaWaupaca; Outagamie Effective8/21/2026, 6:29:00 PM CDT Expires8/21/2026, 7:00:00 PM CDT Special Weather Statement issued...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBox Butte, NE; Dawes, NE; Sioux, NE Effective8/21/2026, 6:23:00 PM CDT Expires8/21/2026, 7:15:00 PM...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaAngelina, TX Effective8/21/2026, 6:24:00 PM CDT Expires8/21/2026, 7:15:00 PM CDT Severe Thunderstorm Warning issued...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBates, MO; Cass, MO; Henry, MO Effective8/21/2026, 6:25:00 PM CDT Expires8/21/2026, 7:15:00 PM CDT...
⚠️ Severe Thunderstorm Warning – Sabine, TX; San Augustine, TX; Shelby, TX – Friday, August 21, 2026
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaSabine, TX; San Augustine, TX; Shelby, TX Effective8/21/2026, 6:18:00 PM CDT Expires8/21/2026, 7:00:00 PM...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaClinton, IA; Jackson, IA; Jones, IA Effective8/21/2026, 6:20:00 PM CDT Expires8/21/2026, 7:15:00 PM CDT...
EventSpecial Weather Statement SeverityModerate UrgencyExpected CertaintyObserved AreaShelby; San Augustine; Sabine Effective8/21/2026, 6:10:00 PM CDT Expires8/21/2026, 7:00:00 PM CDT Special Weather...