Active Weather Alerts
Severe Thunderstorm Warning
Issued: 11:24 PM Aug. 18, 2026 – National Weather Service
The National Weather Service in Milwaukee/Sullivan has issued a * Severe Thunderstorm Warning for... Southwestern Ozaukee County in southeastern Wisconsin... Northern Milwaukee County in southeastern Wisconsin... Waukesha County in southeastern Wisconsin... Southeastern Dane County in south central Wisconsin... Southern Washington County in southeastern Wisconsin... Jefferson County in southeastern Wisconsin... Southeastern Dodge County in southeastern Wisconsin... * Until 730 PM CDT. * At 623 PM CDT, severe thunderstorms were located along a line extending from near Jackson to near Lac La Belle to near Lake Mills to near Stoughton, moving southeast at 35 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Milwaukee, Waukesha, West Allis, Wauwatosa, New Berlin, Brookfield, Menomonee Falls, Muskego, Watertown, Mequon, Whitewater, Hartford, Whitefish Bay, Pewaukee, Stoughton, Fort Atkinson, Brown Deer, Grafton, Cedarburg, and Port Washington. Other landmarks included are the following Locations Timmerman Airport, Froedert & the Medical College, Pewaukee Lake, Ottawa Lake Recreation Area, and Pinewoods Campground. 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...0.75 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
Severe Thunderstorm Watch
Issued: 11:10 PM Aug. 18, 2026 – National Weather Service
SEVERE THUNDERSTORM WATCH 595 REMAINS VALID UNTIL 10 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN WISCONSIN THIS WATCH INCLUDES 13 COUNTIES IN EAST CENTRAL WISCONSIN FOND DU LAC SHEBOYGAN IN SOUTH CENTRAL WISCONSIN DANE GREEN IOWA LAFAYETTE ROCK IN SOUTHEAST WISCONSIN DODGE JEFFERSON OZAUKEE WALWORTH WASHINGTON WAUKESHA THIS INCLUDES THE CITIES OF ARGYLE, BARNEVELD, BEAVER DAM, BELMONT, BELOIT, BENTON, BLANCHARDVILLE, BRODHEAD, BROOKFIELD, CEDARBURG, DARLINGTON, DELAVAN, DODGEVILLE, EAST TROY, ELKHORN, FOND DU LAC, FORT ATKINSON, GERMANTOWN, GRAFTON, HARTFORD, HOWARDS GROVE, JANESVILLE, JEFFERSON, LAKE GENEVA, MADISON, MAYVILLE, MENOMONEE FALLS, MEQUON, MINERAL POINT, MONROE, MUSKEGO, NEW BERLIN, OOSTBURG, PLYMOUTH, SHEBOYGAN FALLS, SHULLSBURG, WATERTOWN, WAUKESHA, WAUPUN, WEST BEND, AND WHITEWATER.
Severe Thunderstorm Warning
Issued: 11:07 PM Aug. 18, 2026 – National Weather Service
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT FOR EASTERN DANE...NORTHWESTERN JEFFERSON AND SOUTHWESTERN DODGE COUNTIES... At 606 PM CDT, severe thunderstorms were located along a line extending from 6 miles north of Watertown to near Marshall to McFarland, moving southeast at 40 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Eastern Madison, Sun Prairie, Fitchburg, Watertown, Stoughton, McFarland, Monona, Lake Mills, Marshall, Waterloo, Juneau, Cottage Grove, Johnson Creek, Deerfield, Cambridge, Hustisford, Lake Ripley, Milford, Reeseville, and Utica. 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...<.75 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
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