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Marine Thunderstorm Wind · Lake Superior

Marine Thunderstorm Wind July 27, 2023 · Eagle River To Manitou Island Mi, Lake Superior

43 mph

Measured gust (37 kt)

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

What the National Weather Service wrote

There was a 43 mph thunderstorm gust at the Copper Harbor ASOS.

The wider storm

The passage of a surface trough and cold front through an unstable air mass led to the development of strong to severe thunderstorms over Lake Superior on the 27th.

Began near Copper Harbor (47.4685, -87.8691).

Source: NOAA Storm Events Database, event 1119647. Narratives are written by the National Weather Service forecast office that issued the report.

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