Iowa Tornado Warning Extreme | Effective 05-17-2026 18:35

Headline: 
Tornado Warning issued May 17 at 8:35PM CDT until May 17 at 9:15PM CDT by NWS Des Moines IA
Event: 
Tornado Warning
Urgency: 
Immediate
Effective: 
May 17, 2026 - 6:35pm
Expires: 
May 17, 2026 - 7:15pm
Description: 
TORDMX The National Weather Service in Des Moines has issued a * Tornado Warning for... Southern Pocahontas County in northwestern Iowa... Northern Sac County in west central Iowa... Northern Calhoun County in west central Iowa... * Until 915 PM CDT. * At 834 PM CDT, a severe thunderstorm capable of producing a tornado was located over Early, or 10 miles west of Sac City, moving east at 55 mph. HAZARD...Tornado. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely. * This dangerous storm will be near... Sac City, Early, and Nemaha around 840 PM CDT. Pomeroy and Jolley around 900 PM CDT. North Twin Lake, Twin Lakes, and Twin Lakes State Park around 905 PM CDT. Manson around 910 PM CDT. Other locations impacted by this tornadic thunderstorm include Palmer, Lytton, Twin Lakes, Twin Lakes State Park, Sac City Municipal Airport, Nemaha, Pomeroy, Early, Schaller, and Jolley.
Instruction: 
TAKE COVER NOW! Move to a basement or an interior room on the lowest floor of a sturdy building. Avoid windows. If you are outdoors, in a mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris. This cluster of thunderstorms is capable of producing tornadoes and widespread significant wind damage. Do not wait to see or hear the tornado. For your protection move to an interior room on the lowest floor of a building.
SNM:AVISO DE TORNADO hasta las 9:15 PM CDT. Refugiese ahora. Consulte medios informativos
Servicio Nacional de Meteorologia: AVISO DE TORNADO en efecto hasta las 9:15 PM CDT. Busque refugio ahora en un sotano o en el interior de un cuarto en el nivel mas bajo de un edificio seguro. Si esta al aire libre, en una casa movil, o en un vehiculo, debe ir al edificio seguro mas cercano y protegerse de proyectiles. Consulte los medios informativos.
Area Description: 
Calhoun, IA; Pocahontas, IA; Sac, IA
Forcast Office: 
NWS Des Moines IA