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Marine Thunderstorm Wind · Lake Superior

Marine Thunderstorm Wind July 18, 2020 · Ontonagon To Upper Entrance of Portage Canal Mi, Lake Superior

58 mph

Estimated gust (50 kt)

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

What the National Weather Service wrote

Widespread power outages were reported from thunderstorm winds across Ontonagon County, especially from White Pine northeast to Ontonagon.

The wider storm

A cold front moving through a moist, unstable and strongly sheared environment produced strong to severe thunderstorms over portions of Lake Superior late evening on the 18th into the early morning of the 19th.

Began near Ontonagon Light (46.8700, -89.3200).

Source: NOAA Storm Events Database, event 908733. Narratives are written by the National Weather Service forecast office that issued the report.

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