Iowa Severe Thunderstorm Warning | Effective 05/15/2026 17:22

Headline: 
Severe Thunderstorm Warning issued May 15 at 7:22PM CDT until May 15 at 7:30PM CDT by NWS Sioux Falls SD
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 15, 2026 - 5:22pm
Expires: 
May 15, 2026 - 5:30pm
Description: 
At 721 PM CDT, a severe thunderstorm was located near Royal, or 12 miles southwest of Spencer In Clay County, moving east at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Peterson.
Instruction: 
For your protection move to an interior room on the lowest floor of a building. To report severe weather contact your nearest law enforcement agency. They will send your report to the National Weather Service office in Sioux Falls.
Area Description: 
Clay, IA
Forcast Office: 
NWS Sioux Falls SD