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Marine Thunderstorm Wind · Lake Superior
Marine Thunderstorm Wind August 12, 2025 · St Marys River From Point Iroquois To E Potagannissing Bay, Lake Superior
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Measured gust to 54mph at Point Iroquois, MI.
The wider storm
Hot and humid weather continued ahead of a cold front marching across the Upper Great Lakes late in the day. A line of thunderstorms crossed the UP during the evening hours with this cold front, resulting in some gusty winds.
Began near Point Iroquois (46.4800, -84.6300).
Source: NOAA Storm Events Database, event 1297455. Narratives are written by the National Weather Service forecast office that issued the report.
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