Iowa Severe Thunderstorm Warning | Effective 05/15/2026 20:14

Headline: 
Severe Thunderstorm Warning issued May 15 at 10:14PM CDT until May 15 at 11:00PM CDT by NWS Des Moines IA
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 15, 2026 - 8:14pm
Expires: 
May 15, 2026 - 9:00pm
Description: 
SVRDMX The National Weather Service in Des Moines has issued a * Severe Thunderstorm Warning for... Northern Black Hawk County in northeastern Iowa... Southern Bremer County in northeastern Iowa... East central Butler County in north central Iowa... * Until 1100 PM CDT. * At 1013 PM CDT, a severe thunderstorm was located near Janesville, or near Waverly, moving east at 55 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Waterloo, Cedar Falls, Waverly, Denver, Shell Rock, Waterloo Municipal Airport, Janesville, Dunkerton, Readlyn, and Waverly Municipal Airport.
Instruction: 
For your protection move to an interior room on the lowest floor of a building.
Area Description: 
Black Hawk, IA; Bremer, IA; Butler, IA
Forcast Office: 
NWS Des Moines IA
Sender: 
w-nws.webmaster@noaa.gov