Active Weather Alerts
Severe Thunderstorm Watch
Issued: 9:00 PM Aug. 21, 2026 – National Weather Service
SEVERE THUNDERSTORM WATCH 610 REMAINS VALID UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN WISCONSIN THIS WATCH INCLUDES 9 COUNTIES IN SOUTH CENTRAL WISCONSIN DANE GREEN IOWA LAFAYETTE ROCK SAUK IN SOUTHEAST WISCONSIN JEFFERSON KENOSHA WALWORTH THIS INCLUDES THE CITIES OF ARGYLE, BARABOO, BARNEVELD, BELMONT, BELOIT, BENTON, BLANCHARDVILLE, BRODHEAD, DARLINGTON, DELAVAN, DODGEVILLE, EAST TROY, ELKHORN, FORT ATKINSON, JANESVILLE, JEFFERSON, KENOSHA, LAKE GENEVA, MADISON, MINERAL POINT, MONROE, PRAIRIE DU SAC, REEDSBURG, SAUK CITY, SHULLSBURG, WATERTOWN, AND WHITEWATER.
Severe Thunderstorm Warning
Issued: 8:54 PM Aug. 21, 2026 – National Weather Service
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. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. && TORNADO...POSSIBLE; HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...1.00 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
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