< Wisconsin Severe Thunderstorm Warning | Effective 04/17/2026 15:41

Wisconsin Severe Thunderstorm Warning | Effective 04/17/2026 15:41

Headline: 
Severe Thunderstorm Warning issued April 17 at 5:41PM CDT until April 17 at 6:30PM CDT by NWS Milwaukee/Sullivan WI
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
April 17, 2026 - 3:41pm
Expires: 
April 17, 2026 - 4:30pm
Description: 
At 540 PM CDT, severe thunderstorms were located along a line extending from 6 miles southeast of Whitewater to near Lake Koshkonong to near Evansville, moving northeast at 55 mph. HAZARD...70 mph wind gusts and ping pong ball size hail. SOURCE...Public. IMPACT...People and animals outdoors will be injured. Expect hail damage to roofs, siding, windows, and vehicles. Expect considerable tree damage. Wind damage is also likely to mobile homes, roofs, and outbuildings. Locations impacted include... Janesville, Beloit, Whitewater, Stoughton, Fort Atkinson, Elkhorn, Delavan, Lake Geneva, Mukwonago, Milton, Edgerton, Evansville, East Troy, Williams Bay, Genoa City, Walworth, Clinton, North Prairie, Palmyra, and Fontana-On-Geneva Lake.
Instruction: 
A Tornado Watch remains in effect until 800 PM CDT for south central and southeastern Wisconsin. Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building.
Area Description: 
Dane, WI; Jefferson, WI; Rock, WI; Walworth, WI; Waukesha, WI
Forcast Office: 
NWS Milwaukee/Sullivan WI