Special Marine Warning

For the following areas... 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... Port Sanilac to Port Huron MI...

At 432 PM EDT, a severe thunderstorm was located 14 nm east of Port Sanilac, moving east at 50 knots.

HAZARD...Wind gusts in excess of 50 knots and large hail.

SOURCE...Radar indicated.

IMPACT...Boats could suffer significant structural damage in high winds and hail. Small craft could capsize in suddenly higher waves.

Locations impacted include... White Rock, Port Sanilac, Richmondville, and Lexington.