National Weather Service United States Department of Commerce

Showers and Storms in the East; Dangerously Hot and Dry in the West

Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >

An area of storms is expected to track through southern WI Sunday morning between 6 AM and Noon. There is uncertainty about whether these storms will hold together, which would be capable of bringing heavy rain and gusty winds, or weaken/diminish as they approach Lake Michigan.
Additional showers and thunderstorms are expected to develop from west to east across a portion of the area, but the exact location and strength of this activity will depend on the morning round. Wherever this round of storms develops, it has the potential to bring heavy rainfall and flash flooding along with pockets of severe weather. The best potential for this line will be south of I-94 toward the WI/IL border, but a northward shift cannot be completely ruled out.
Will be a few windows for strong to severe storms Sunday through Monday. First will be a small potential late morning/early afternoon with upstream cluster of storms moving in. The better potential will be for an late afternoon and evening round toward the WI/IL border with strong winds and flash flooding being the main concern. Additional strong to severe chances will be possible Monday, but dependent on Sunday's outcome and where things end up, which at this point favors the WI/IL border and south.