For the following areas... St. Clair River...
At 412 PM EDT, strong thunderstorms were located along a line extending from 24 nm east of Port Sanilac to 32 nm east of Lexington to 28 nm east of Lakeport to 19 nm east of Port Huron, moving east at 40 knots.
HAZARD...Wind gusts to 40 knots.
SOURCE...Radar indicated.
IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves.