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Marine Thunderstorm Wind · Lake Michigan

Marine Thunderstorm Wind July 16, 2017 · Pt Washington To North Pt Lt Wi, Lake Michigan

39 mph

Estimated gust (34 kt)

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

What the National Weather Service wrote

Social media and broadcast media outlets reported the boat capsizing around 1130 pm CDT. The Coast Guard reported shifting winds of 30 to 35 mph near the time of the boat capsizing.

The wider storm

Passing weak thunderstorms and an outflow boundary caused rapidly shifting winds to affect the 109th Annual Chicago to Mackinac Race. The shifting winds caused a Corsair 31 multi-hull vessel to capsize. Four crew members were rescued by the Coast Guard.

Began near Port Washington (43.3800, -87.2726).

Source: NOAA Storm Events Database, event 704875. Narratives are written by the National Weather Service forecast office that issued the report.

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