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Waterspout · Lake Michigan

Waterspout September 24, 2011 · Northerly Island To Calumet Harbor Il, 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 3 to 4 miles east from the shore near 47th Street.

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 Burnham Harbor (41.8114, -87.5166).

Source: NOAA Storm Events Database, event 347276. Narratives are written by the National Weather Service forecast office that issued the report.

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