SMWAPX The National Weather Service in Gaylord has issued a * Special Marine Warning for. Lake Huron from Presque Isle Lt. to Sturgeon Point MI 5NM off shore to US/Canadian border. Lake Huron from Sturgeon Point to Alabaster MI 5NM off shore to US/Canadian border. Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary. Sturgeon Pt to Alabaster MI. * Until 430 AM EDT. * At 255 AM EDT, a strong thunderstorm was located near Oscoda, moving northeast at 35 knots. HAZARD. Wind gusts 34 knots or greater and small hail. SOURCE. Radar. IMPACT. Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include. Sturgeon Point, Au Sable Point, Harrisville, Oscoda, and Greenbush.

At 227 AM EDT, Doppler radar was tracking a cluster of strong thunderstorms over National City, or 8 miles west of Tawas City, moving northeast at 30 mph. HAZARD. Nickel size hail. SOURCE. Radar indicated. IMPACT. Minor hail damage to vegetation is possible. Locations impacted include. Alger, Oscoda, East Tawas, Tawas City, Sterling, Harrisville, Au Sable, Maple Ridge, Mikado, Whittemore, Twining, Turner, Skidway Lake, Plainfield Township, National City, Hale, Harrisville State Park, Wurtsmith Airfield, Tawas Point State Park, and Wilber.

* WHAT. Heat index values up to 97. * WHERE. Portions of central, south central, southwest, and west central Michigan. * WHEN. Until 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.

* WHAT. Heat index values up to 100 expected. * WHERE. A portion of southeast Michigan. * WHEN. Until 8 PM EDT Friday. * IMPACTS. Hot temperatures and high humidity may cause heat illnesses.