National Weather Service United States Department of Commerce

Thunderstorms along the I-94 corridor are weakening this evening, but may still bring frequent lightning, torrential downpours, and gusty winds over the next few hours. Localized flooding may occur if these storms track over areas that have already seen heavy rainfall today.
Strong to severe weather will be possible today and tonight. Isolated to scattered showers and thunderstorms this afternoon during the peak heating hours will pose an isolated severe threat. Greater potential will come tonight when a potential line of storms moves out of Wisconsin and into southeast Michigan. There remains some uncertainty if this line of storms weakens as it moves into southeast Michigan overnight. If it does remain organized, there will be a threat for damaging winds and heavy rainfall.
Air Quality Alert for today July 20, 2019.
Some heat safety tips.