Iowa Severe Thunderstorm Warning | Effective 05/17/2026 20:01

Headline: 
Severe Thunderstorm Warning issued May 17 at 10:01PM CDT until May 17 at 10:30PM CDT by NWS Des Moines IA
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 17, 2026 - 8:01pm
Expires: 
May 17, 2026 - 8:30pm
Description: 
At 1001 PM CDT, severe thunderstorms were located along a line extending from near Adair to 6 miles north of Bridgewater to near Hacklebarney Woods County Park, moving east at 50 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Atlantic, Greenfield, Griswold, Lake Icaria, Anita, Adair, Fontanelle, Lewis, Massena, Cumberland, Bridgewater, Marne, Wiota, Nodaway, Carbon, Lake Anita State Park, Greenfield Municipal Airport, Nodaway Park, Griswold Park, and Cold Springs State Park.
Instruction: 
A Tornado Watch remains in effect until 300 AM CDT for southwestern Iowa. For your protection move to an interior room on the lowest floor of a building.
Area Description: 
Adair, IA; Adams, IA; Cass, IA
Forcast Office: 
NWS Des Moines IA