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Marine Thunderstorm Wind · Lake Superior

Marine Thunderstorm Wind September 21, 2007 · Pt Wing To Sand Is Wi, Lake Superior

45 mph

Estimated gust (39 kt)

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Estimated wind gusts to 45 mph at Cornucopia Marina.

The wider storm

A squall line containing thunderstorms with strong winds developed ahead of a cold front that moved southeast across Western Lake Superior during the late afternoon hours of September 21.

Began near Sand Island (46.6997, -91.0212).

Source: NOAA Storm Events Database, event 59636. Narratives are written by the National Weather Service forecast office that issued the report.

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