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Marine Thunderstorm Wind · Lake Superior

Marine Thunderstorm Wind August 5, 2019 · Manitou Island To Marquette Mi Beyond 5nm From Shore, Lake Superior

78 mph
Measured gust (68 kt)

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

What the National Weather Service wrote

The GLOS observing station at the Big Bay Lighthouse measured thunderstorm wind gusts at 78 mph.

The wider storm

A cold front moving across a moist and unstable air mass produced isolated severe thunderstorms over portions of Lake Superior on the afternoon of the 5th.

Began near Huron Island Light (46.8350, -87.6416).

Source: NOAA Storm Events Database, event 848891. Narratives are written by the National Weather Service forecast office that issued the report.

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