Active Weather Alerts
Severe Thunderstorm Watch
Issued: 12:11 AM Aug. 19, 2026 – National Weather Service
WI . WISCONSIN COUNTIES INCLUDED ARE DANE DODGE FOND DU LAC GRANT GREEN IOWA JEFFERSON KENOSHA LAFAYETTE MILWAUKEE OZAUKEE RACINE ROCK SHEBOYGAN WALWORTH WASHINGTON WAUKESHA
Severe Thunderstorm Warning
Issued: 12:04 AM Aug. 19, 2026 – National Weather Service
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR NORTHERN MILWAUKEE...SOUTHERN WAUKESHA AND SOUTHEASTERN JEFFERSON COUNTIES... At 704 PM CDT, severe thunderstorms were located along a line extending from 6 miles northeast of Milwaukee Hoan Bridge to near Muskego to near North Prairie to 6 miles northwest of Delavan, moving southeast at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Milwaukee, Waukesha, West Allis, Wauwatosa, New Berlin, Brookfield, Muskego, Whitewater, Whitefish Bay, Mukwonago, Fox Point, Elm Grove, Bayside, Wales, Glendale, Vernon, Ottawa, North Prairie, Palmyra, and River Hills. 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
Special Marine Warning
Issued: 11:55 PM Aug. 18, 2026 – National Weather Service
...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 830 PM CDT... For the following areas... Lake Michigan nearshore and open waters to mid lake from Sheboygan WI to Winthrop Harbor IL... At 655 PM CDT, severe thunderstorms capable of producing waterspouts were located along a line extending from 11 nm west of Port Washington to 23 nm west of Milwaukee to 50 nm northwest of McHenry. The severe thunderstorms were nearly stationary. HAZARD...Waterspouts, wind gusts in excess of 50 knots, and small hail. SOURCE...Radar indicated. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Boats could suffer significant structural damage in high winds. Small craft could capsize in suddenly higher waves. Severe thunderstorms will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && WATERSPOUT...POSSIBLE; HAIL...<.75IN; WIND...50KTS
Severe Thunderstorm Warning
Issued: 11:54 PM Aug. 18, 2026 – National Weather Service
The National Weather Service in Milwaukee/Sullivan has issued a * Severe Thunderstorm Warning for... Southern Milwaukee County in southeastern Wisconsin... Racine County in southeastern Wisconsin... Southeastern Waukesha County in southeastern Wisconsin... * Until 745 PM CDT. * At 654 PM CDT, severe thunderstorms were located along a line extending from Milwaukee to West Allis to near New Berlin to North Prairie, moving southeast at 50 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Milwaukee, Racine, West Allis, New Berlin, Greenfield, Oak Creek, Mount Pleasant, Muskego, South Milwaukee, Cudahy, Greendale, St. Francis, Hales Corners, Mukwonago, Sturtevant, Union Grove, West Milwaukee, Franklin, Wind Lake, and Raymond. People attending Mount Pleasant Sounds at Sunset should seek safe shelter immediately! Other landmarks included are the following Locations Boerner Botanical Gardens, General Mitchell International Airport, and Fiserv Forum. 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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