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

Severe Thunderstorm Warning issued September 4 at 12:43AM CDT until September 4 at 1:30AM CDT by NWS Green Bay WI

Details

SVRGRB

The National Weather Service in Green Bay has issued a

* Severe Thunderstorm Warning for…
Southern Calumet County in east central Wisconsin…
Southeastern Winnebago County in east central Wisconsin…

* Until 130 AM CDT.

* At 1243 AM CDT, a severe thunderstorm was located 8 miles south of
Central Lake Winnebago, or 13 miles southeast of Oshkosh, moving
east at 30 mph.

HAZARD…60 mph wind gusts and half dollar 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…
Central Lake Winnebago around 1245 AM CDT.
St Anna around 105 AM CDT.

Other locations impacted by the severe thunderstorm include Black
Wolf Point, Brothertown, Quinney, Jericho, Charlesburg and New
Holstein.

Instructions

Seek shelter inside a well-built structure and stay away from
windows. This storm is 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.