Milwaukee, Wisconsin – Strong thunderstorms capable of damaging winds and intense lightning are expected to sweep across southern Wisconsin overnight, threatening travel and power reliability through early Tuesday morning.
According to the National Weather Service Storm Prediction Center, Severe Thunderstorm Watch 77 remains in effect until 3 a.m. Tuesday for counties including Milwaukee, Dane, Waukesha, Racine, and Kenosha. Storms moving in from Iowa and Illinois may produce wind gusts over 60 mph along with isolated hail, especially as they strengthen late tonight.
The highest impacts are expected along the I-94 corridor from Madison to Milwaukee and south toward the Illinois border. Drivers could encounter sudden downpours reducing visibility, while strong wind gusts may down tree limbs and power lines in urban and suburban areas.
Communities including Madison, Janesville, and areas in Rock and Walworth counties may see storms arrive earlier in the night, with activity shifting east toward Milwaukee and lakeshore communities after midnight.
Residents should secure outdoor items, keep mobile devices charged, and avoid unnecessary travel while storms pass. Overnight alerts should be enabled as warnings may be issued while many are asleep.
Storms are expected to weaken toward sunrise Tuesday, though additional advisories may follow as the system moves east.
