If outdoors, consider seeking shelter inside a building.

At 1243 PM EDT, Doppler radar was tracking a cluster of strong thunderstorms 7 miles east of St. Charles, moving northeast at 35 mph. HAZARD...Winds in excess of 40 mph and half inch hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Saginaw, Bay City, Flushing, Frankenmuth, Vassar, Clio, Birch Run, Reese, Millington, Akron, Freeland, Essexville, Mount Morris, Zilwaukee, Montrose, Fairgrove, Unionville, Otter Lake, Bridgeport, and Munger. This includes the following highways... I-75 between mile markers 125 and 161. I-475 near mile marker 16. I-675 between mile markers 1 and 7.