The areas affected include... Harbor Beach to Port Sanilac MI... Lake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to US/Canadian border... Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border... Lake St. Clair Open Lake (U.S. Portion)... Port Sanilac to Port Huron MI... St. Clair River...
At 1244 PM EDT, Doppler radar indicated strong thunderstorms, capable of producing winds up to 30 knots. These thunderstorms were located along a line extending from 13 nm southeast of Quanicassee to 19 nm northwest of New Baltimore to near St. Clair Shores, moving east at 35 knots.
strong thunderstorms will be near... Grosse Pointe and St. Clair Shores around 1250 PM EDT. Mt Clemens Harbor Of Refuge, New Baltimore, and Metro Beach Metropark Marina around 1255 PM EDT. St Clair Flats Old Channel Light around 100 PM EDT. Algonac around 110 PM EDT. St. Clair around 115 PM EDT. Lakeport and Port Huron around 130 PM EDT.