Iowa Severe Thunderstorm Warning | Effective 04/17/2026 12:35

Headline: 
Severe Thunderstorm Warning issued April 17 at 2:35PM CDT until April 17 at 3:15PM CDT by NWS Des Moines IA
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
April 17, 2026 - 12:35pm
Expires: 
April 17, 2026 - 1:15pm
Description: 
SVRDMX The National Weather Service in Des Moines has issued a * Severe Thunderstorm Warning for... Bremer County in northeastern Iowa... Southeastern Butler County in north central Iowa... * Until 315 PM CDT. * At 234 PM CDT, a severe thunderstorm was located 6 miles southwest of Shell Rock, or 7 miles southeast of Allison, moving northeast at 45 mph. HAZARD...Golf ball size hail and 60 mph wind gusts. SOURCE...Radar indicated. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Waverly, Sumner, Parkersburg, Denver, Clarksville, Tripoli, Shell Rock, Janesville, Readlyn, Plainfield, Frederika, and Waverly Municipal Airport.
Instruction: 
For your protection move to an interior room on the lowest floor of a building. A Tornado Watch remains in effect until 800 PM CDT for north central and northeastern Iowa.
Area Description: 
Bremer, IA; Butler, IA
Forcast Office: 
NWS Des Moines IA
Sender: 
w-nws.webmaster@noaa.gov