EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaJasper, IA; Marshall, IA; Poweshiek, IA; Story, IA; Tama, IA Effective8/13/2026, 7:11:00 AM CDT...
Forecasts
SPC Day 1/2/3 outlooks, convective outlooks
EventTornado Warning SeverityExtreme UrgencyImmediate CertaintyObserved AreaJasper, IA; Marshall, IA; Polk, IA; Story, IA Effective8/13/2026, 6:48:00 AM CDT Expires8/13/2026, 7:15:00 AM...
EventTornado Warning SeverityExtreme UrgencyImmediate CertaintyObserved AreaMarshall, IA; Story, IA Effective8/13/2026, 6:44:00 AM CDT Expires8/13/2026, 7:15:00 AM CDT Tornado Warning issued...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBoone, IA; Dallas, IA; Jasper, IA; Marshall, IA; Polk, IA; Story, IA Effective8/13/2026, 6:27:00...
EventSevere Thunderstorm Watch SeveritySevere UrgencyFuture CertaintyPossible AreaBenton, IA; Cedar, IA; Des Moines, IA; Henry, IA; Iowa, IA; Jefferson, IA; Johnson,...
EventSevere Thunderstorm Watch SeveritySevere UrgencyFuture CertaintyPossible AreaBoone, IA; Clarke, IA; Dallas, IA; Grundy, IA; Hamilton, IA; Hardin, IA; Jasper, IA;...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBoone, IA; Carroll, IA; Dallas, IA; Greene, IA; Guthrie, IA; Polk, IA Effective8/13/2026, 5:51:00...
EventTornado Warning SeverityExtreme UrgencyImmediate CertaintyObserved AreaGreene, IA Effective8/13/2026, 5:46:00 AM CDT Expires8/13/2026, 6:15:00 AM CDT Tornado Warning issued August 13...
EventTornado Warning SeverityExtreme UrgencyImmediate CertaintyObserved AreaCarroll, IA Effective8/13/2026, 5:30:00 AM CDT Expires8/13/2026, 6:00:00 AM CDT Tornado Warning issued August 13...
EventFlash Flood Warning SeveritySevere UrgencyImmediate CertaintyLikely AreaMonona, IA; Thurston, NE Effective8/13/2026, 5:25:00 AM CDT Expires8/13/2026, 8:30:00 AM CDT Flash Flood...