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Marine Thunderstorm Wind · Lake Superior
Marine Thunderstorm Wind July 27, 2023 · Grand Marais To Whitefish Point Mi, Lake Superior
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
The Grand Marais GLOS reported a thunderstorm gust of 40 mph.
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 Grand Marais Light (46.6795, -85.9720).
Source: NOAA Storm Events Database, event 1119651. Narratives are written by the National Weather Service forecast office that issued the report.
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