EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBoone, IA; Jasper, IA; Polk, IA; Story, IA Effective7/20/2026, 6:47:00 PM CDT Expires7/20/2026, 7:30:00...
Forecasts
SPC Day 1/2/3 outlooks, convective outlooks
EventSpecial Weather Statement SeverityModerate UrgencyExpected CertaintyObserved AreaValley; Greeley Effective7/20/2026, 6:40:00 PM CDT Expires7/20/2026, 7:00:00 PM CDT Special Weather Statement issued...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaScotts Bluff, NE; Sioux, NE; Goshen, WY Effective7/20/2026, 6:31:00 PM CDT Expires7/20/2026, 7:15:00 PM...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBoone, IA; Story, IA Effective7/20/2026, 6:34:00 PM CDT Expires7/20/2026, 7:00:00 PM CDT Severe Thunderstorm...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBoone, IA Effective7/20/2026, 6:21:00 PM CDT Expires7/20/2026, 7:15:00 PM CDT Severe Thunderstorm Warning issued...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaKeokuk, IA; Washington, IA Effective7/20/2026, 6:17:00 PM CDT Expires7/20/2026, 7:15:00 PM CDT Severe Thunderstorm...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBoone, IA; Hamilton, IA; Hardin, IA; Marshall, IA; Story, IA Effective7/20/2026, 6:09:00 PM CDT...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaJasper, IA; Marshall, IA; Story, IA Effective7/20/2026, 6:12:00 PM CDT Expires7/20/2026, 7:00:00 PM CDT...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaBoone, IA; Hamilton, IA; Hardin, IA; Story, IA Effective7/20/2026, 5:52:00 PM CDT Expires7/20/2026, 6:15:00...
EventSevere Thunderstorm Warning SeveritySevere UrgencyImmediate CertaintyObserved AreaJasper, IA; Marshall, IA; Poweshiek, IA; Tama, IA Effective7/20/2026, 5:48:00 PM CDT Expires7/20/2026, 6:45:00...