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Marine Thunderstorm Wind · Lake Superior

Marine Thunderstorm Wind July 21, 2016 · Ontonagon To Upper Entrance of Portage Canal Mi, Lake Superior

72 mph

Measured gust (63 kt)

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

What the National Weather Service wrote

The spotter at Freda measured a peak thunderstorm wind gust to 63 mph.

The wider storm

An upper disturbance approaching from the west interacted with a very warm and unstable air mass to produce strong to severe thunderstorms over Lake Superior on the morning of the 21st.

Began near Beacon Hill (47.1381, -88.8183).

Source: NOAA Storm Events Database, event 651602. Narratives are written by the National Weather Service forecast office that issued the report.

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