Special Marine Warning for Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park; Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border

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For the following areas... Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park... Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border... At 735 PM EDT, strong thunderstorms were located along a line extending from 7 nm southeast of Passage Island Light to 9 nm southwest of Mott Island Park Headquarters to 8 nm northeast of Rock of Ages Light, moving southeast at 25 knots. HAZARD...Wind gusts to 40 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Rock of Ages Light, Passage Island Light, and Mott Island Park Headquarters.