National Weather Service United States Department of Commerce

Severe Weather in the Plains; Heavy Rainfall in the Ohio and Tennessee Valleys; Heat Wave in the Central U.S.

Numerous severe storms with a potential for severe wind gusts, tornadoes (some potentially strong), and very large hail are expected in parts of the central and northern Plains. Heavy rainfall may bring a flooding threat to parts of the northern Plains and from the Ohio Valley to the Southeast. Fire weather concerns persist in the Four Corners Region. Hot and humid expected in the central U.S.. Read More >

Several rounds of severe storms are possible for southern WI between early Wednesday morning and late Thursday night. Right now it looks like Wed afternoon/evening is the most likely timeframe for widespread, higher-end severe storms. Keep up with the forecast as things will change. Now is the time to review your severe weather safety plan.
Large hail is the main concern with any scattered storms that develop early Wednesday morning, with damaging winds a close second. Right now it looks like the peak timing of storms would occur between 3 and 6 AM, but keep up with the forecast.
All severe hazards (damaging winds, large hail, tornadoes, flooding) are possible with the storms that are expected to roll across southern WI Wednesday evening. They should occur between 6 and 10 PM, but timing may change so keep up with the forecast.