⚠️ Severe Thunderstorm Warning – Calumet, WI; Manitowoc, WI – Friday, September 4, 2026

Severe Thunderstorm Warning issued September 4 at 1:57AM CDT until September 4 at 3:00AM CDT by NWS Green Bay WI

Details

SVRGRB

The National Weather Service in Green Bay has issued a

* Severe Thunderstorm Warning for…
Calumet County in east central Wisconsin…
Southwestern Manitowoc County in east central Wisconsin…

* Until 300 AM CDT.

* At 157 AM CDT, severe thunderstorms were located along a line from
over Menasha to 7 miles north of Rush Lake, or along a line from
near Appleton to 15 miles west of Oshkosh, moving east at 35 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…
Menasha, Northern Lake Winnebago, Appleton and Central Lake
Winnebago around 200 AM CDT.
High Cliff State Park around 210 AM CDT.
Chilton and Brillion around 230 AM CDT.
St. Nazianz around 245 AM CDT.
St Anna around 250 AM CDT.
Camp Rokilio Scout Camp around 255 AM CDT.

Other locations impacted by the severe thunderstorm include Sherwood,
Harrison, St John, Stockbridge, Hilbert, Forest Junction, Kloten,
Quinney, Brothertown and Brant.

Instructions

Seek shelter inside a well-built structure and stay away from
windows. These storms are capable of producing damaging winds and
large hail.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.