Iowa Severe Thunderstorm Warning | Effective 05/16/2026 15:45

Headline: 
Severe Thunderstorm Warning issued May 16 at 5:45PM CDT until May 16 at 6:15PM CDT by NWS Omaha/Valley NE
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 16, 2026 - 3:45pm
Expires: 
May 16, 2026 - 4:15pm
Description: 
At 544 PM CDT, a severe thunderstorm was located 3 miles west of Griswold, or 14 miles north of Red Oak, moving north at 20 mph. HAZARD...Golf ball size hail. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect damage to roofs, siding, windows, and vehicles. This severe thunderstorm will remain over mainly rural areas of southeastern Pottawattamie County.
Instruction: 
Prepare immediately for large hail and deadly cloud to ground lightning. Seek shelter inside a well-built structure. Stay away from windows.
Area Description: 
Pottawattamie, IA
Forcast Office: 
NWS Omaha/Valley NE