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Marine Thunderstorm Wind · Lake Superior

Marine Thunderstorm Wind July 27, 2025 · Eagle River To Manitou Island Mi, Lake Superior

46 mph

Measured gust (40 kt)

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

What the National Weather Service wrote

A 40 knot wind gust was recorded at the Copper Harbor ASOS (KP59) at 1145EST. A 36 knot wind gust was recorded at 1158EST.

The wider storm

A line of thunderstorms moved eastward across the lake during the late morning and early afternoon on the 27th, bringing wind gusts as high as 53 knots.

Began near Copper Harbor (47.4700, -87.8800).

Source: NOAA Storm Events Database, event 1287921. Narratives are written by the National Weather Service forecast office that issued the report.

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