EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBenton, IA; Iowa, IA Effective6/17/2026, 6:09:00 AM CDT Expires6/17/2026, 7:15:00 AM CDT Severe Thunderstorm...
Forecasts
SPC Day 1/2/3 outlooks, convective outlooks
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaJasper, IA; Mahaska, IA; Marshall, IA; Poweshiek, IA Effective6/17/2026, 6:08:00 AM CDT Expires6/17/2026, 7:15:00...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaMarshall, IA; Poweshiek, IA; Tama, IA Effective6/17/2026, 5:49:00 AM CDT Expires6/17/2026, 6:45:00 AM CDT...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaJohnson, IA; Louisa, IA; Muscatine, IA; Washington, IA Effective6/17/2026, 5:52:00 AM CDT Expires6/17/2026, 6:45:00...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaGrundy, IA; Marshall, IA; Tama, IA Effective6/17/2026, 5:43:00 AM CDT Expires6/17/2026, 6:30:00 AM CDT...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaJasper, IA; Marshall, IA; Story, IA; Tama, IA Effective6/17/2026, 5:32:00 AM CDT Expires6/17/2026, 6:15:00...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBoone, IA; Jasper, IA; Marshall, IA; Polk, IA; Story, IA Effective6/17/2026, 5:34:00 AM CDT...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBoone, IA; Greene, IA; Hamilton, IA; Webster, IA Effective6/17/2026, 5:13:00 AM CDT Expires6/17/2026, 5:45:00...
EventFlash Flood Warning SeveritySevere UrgencyImmediate CertaintyLikely AreaBrazoria, TX Effective6/17/2026, 4:55:00 AM CDT Expires6/17/2026, 8:00:00 AM CDT Flash Flood Warning issued...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBoone, IA; Hamilton, IA; Hardin, IA; Marshall, IA; Story, IA Effective6/17/2026, 4:52:00 AM CDT...