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Marine Thunderstorm Wind · Lake Superior

Marine Thunderstorm Wind June 21, 2025 · Manitou Island To Marquette Mi Beyond 5nm From Shore, Lake Superior

62 mph

Measured gust (54 kt)

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

What the National Weather Service wrote

U-MICH and NMU Mesonet station GISM4 reported a brief wind gust to 54 mph at 7:10 EST on the 21st.

The wider storm

A thunderstorm complex moved over Lake Superior, and the thunderstorms plus its associated wake low produced high winds across much of the lake on the 21st.

Began near Marquette (46.7092, -87.4000).

Source: NOAA Storm Events Database, event 1278421. Narratives are written by the National Weather Service forecast office that issued the report.

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