Iowa Severe Severe Thunderstorm Warning | Effective 06/28/2026 04:48

Headline: 
Severe Thunderstorm Warning issued June 28 at 6:48AM CDT until June 28 at 7:15AM CDT by NWS Sioux Falls SD
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
June 28, 2026 - 4:48am
Expires: 
June 28, 2026 - 5:15am
Description: 
At 646 AM CDT, severe thunderstorms were located along a line extending from near Terril to 6 miles southwest of Lost Island Lake to near Royal, moving east at 45 mph. HAZARD...70 mph wind gusts and half dollar size hail. SOURCE...Automated Equipment. At 6:34 AM CDT, a wind gust to 68 mph was reported by the automated observation system at the Spencer Municipal Airport. IMPACT...Hail damage to vehicles is expected. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. These severe storms will be near... Greenville and Lost Island Lake around 650 AM CDT. Other locations in the path of these severe thunderstorms include Webb.
Instruction: 
Prepare immediately for large hail and damaging winds. People outside should move to a shelter, inside a strong building and away from windows. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.
Area Description: 
Buena Vista, IA; Cherokee, IA; Clay, IA; Dickinson, IA; O'Brien, IA
Forcast Office: 
NWS Sioux Falls SD