National Weather Service United States Department of Commerce

Locally dense fog with very low visibility of less than ½ mile is expected to develop across parts of northern Michigan tonight into Wednesday morning. Be sure to use low-beam headlights, reduce speed, and increase follow distance if driving.
Isolated to scattered severe thunderstorms are possible late Wednesday afternoon into Wednesday night across Northern Michigan. Best chance of Severe thunderstorms will be east of I-75 between 4pm-2am. The primary threat is damaging wind gusts. However, hail, localized flooding, and even a tornado remain possible.
Heat and humidity will steadily build this Wednesday and Thursday with apparent temperatures reaching the upper 80s to low 90s. This heat will pose a risk—especially to sensitive groups and those without adequate hydration.
Another round of isolated to scattered severe thunderstorms remain possible this Thursday. Best chances for severe storms remain across Michigan's Lower Peninsula Thursday afternoon into Thursday night. The primary threat is damaging wind gusts but hail, localized flooding, and even a tornado remain possible.