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Waterspout · Lake Michigan

Waterspout September 24, 2011 · Winthrop Harbor To Wilmette Harbor Il 5nm Offshore To Mid Lake, Lake Michigan

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

What the National Weather Service wrote

A waterspout was reported approximately 10 miles southeast of the Great Lakes Naval Station.

The wider storm

Atmospheric conditions became favorable for non-thunderstorm waterspouts during the early morning hours of September 24th, as very cold air aloft interacted with a convergence boundary along the Illinois shore of Lake Michigan. Several waterspouts were spotted during the morning hours after sunrise.

Began near Wilmette Harbor (42.2205, -87.6800).

Source: NOAA Storm Events Database, event 347273. Narratives are written by the National Weather Service forecast office that issued the report.

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