Wisconsin Severe Severe Thunderstorm Warning | Effective 09/04/2026 00:43

Headline: 
Severe Thunderstorm Warning issued September 4 at 2:43AM CDT until September 4 at 3:00AM CDT by NWS Green Bay WI
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
September 4, 2026 - 12:43am
Expires: 
September 4, 2026 - 1:00am
Description: 
At 243 AM CDT, severe thunderstorms were located along a line from near St Anna to 16 miles south of St Anna, or along a line from 22 miles southwest of Manitowoc to 28 miles southeast of Oshkosh, moving southeast at 50 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. This severe thunderstorm will be near... St Anna and Chilton around 245 AM CDT. Camp Rokilio Scout Camp and St. Nazianz around 250 AM CDT. Other locations impacted by the severe thunderstorm include Kiel, Meggers, New Holstein, Steinthal, Charlesburg, Hayton, Killsnake Wildlife Area, Millhome, Louis Corners and School Hill.
Instruction: 
Seek shelter inside a well-built structure and stay away from windows. These storms are capable of producing damaging winds and large hail.
Area Description: 
Calumet, WI; Manitowoc, WI
Forcast Office: 
NWS Green Bay WI
Sender: 
w-nws.webmaster@noaa.gov