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Marine Thunderstorm Wind · Lake Superior

Marine Thunderstorm Wind May 15, 2025 · Munising To Grand Marais Mi, Lake Superior

39 mph

Measured gust (34 kt)

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

What the National Weather Service wrote

The ASOS station KP53 Munising Lakeshore recorded a brief 34 kt wind gust associated with a line of thunderstorms at 10:27 PM EST on the 15th.

The wider storm

A deep low pressure over the Upper Midwest sent multiple rounds of severe weather through the over the nearshore waters of the Bay of Green Bay and Lake Michigan, first by an occluded front on the 15th and then with the main low pressure and associated cold front on the 16th.

Began near Grand Island Harbor Light (46.4407, -86.6207).

Source: NOAA Storm Events Database, event 1268159. Narratives are written by the National Weather Service forecast office that issued the report.

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