For the following areas... 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island... Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt to the US/Canadian border beyond 5 NM from shore...
At 538 PM EDT, a strong thunderstorm was located over Observatory Point, moving northeast at 25 knots.
HAZARD...Wind gusts 34 knots or greater.
SOURCE...Radar indicated.
IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves.
Locations impacted include... Adams Point and Observatory Point.