Iowa Severe Thunderstorm Warning | Effective 05/17/2026 17:56

Headline: 
Severe Thunderstorm Warning issued May 17 at 7:56PM CDT until May 17 at 8:30PM CDT by NWS Sioux Falls SD
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 17, 2026 - 5:56pm
Expires: 
May 17, 2026 - 6:30pm
Description: 
At 755 PM CDT, severe thunderstorms were located along a line extending from near Merrill to near Pierson to near Smithland, moving northeast at 80 mph. HAZARD...70 mph wind gusts and half dollar size hail. SOURCE...Mesonet. At 748 PM CDT, a 67 mph wind gust was reported by a personal weather station in Moville, IA. IMPACT...Hail damage to vehicles is expected. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. These severe storms will be near... Remsen, Kingsley, Correctionville, Pierson, Washta, and Cushing around 800 PM CDT. Other locations in the path of these severe thunderstorms include Holstein, Marcus, Quimby, Cherokee, Galva, Cleghorn and Aurelia.
Instruction: 
Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. Prepare immediately for large hail and damaging winds. People outside should move to a shelter, inside a strong building and away from windows.
Area Description: 
Cherokee, IA; Ida, IA; Plymouth, IA; Woodbury, IA
Forcast Office: 
NWS Sioux Falls SD
Sender: 
w-nws.webmaster@noaa.gov