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Marine Thunderstorm Wind · Lake Superior

Marine Thunderstorm Wind June 21, 2025 · Upper Entrance of Portage Canal To Eagle River Mi, Lake Superior

47 mph

Measured gust (41 kt)

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

What the National Weather Service wrote

The North Entry Buoy 45023 measured SSE wind gusts in excess of 39 mph from 7:20 AM to 9:00 AM EST.

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 Keweenaw Upper Entry Light (47.2700, -88.6070).

Source: NOAA Storm Events Database, event 1278411. Narratives are written by the National Weather Service forecast office that issued the report.

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