⚠️ Severe Thunderstorm Warning – Dane, WI; Iowa, WI – Friday, August 21, 2026

Severe Thunderstorm Warning issued August 21 at 3:54PM CDT until August 21 at 5:00PM CDT by NWS Milwaukee/Sullivan WI

Details

SVRMKX

The National Weather Service in Milwaukee/Sullivan has issued a

* Severe Thunderstorm Warning for…
East central Iowa County in south central Wisconsin…
Western Dane County in south central Wisconsin…

* Until 500 PM CDT.

* At 354 PM CDT, a severe thunderstorm was located near Mazomanie, or
10 miles southwest of Sauk City, moving southeast at 20 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.

* Locations impacted include…
Western Madison, Middleton, Waunakee, Verona, Mount Horeb, Cross
Plains, Mazomanie, Black Earth, Barneveld, Blue Mounds, Arena, Pine
Bluff, Blue Mound St Park, Mount Vernon, and Marxville.

Other landmarks included are the following Location Hyde’s Mill.

Instructions

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.

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