Waterspout — Winthrop Harbor To Wilmette Harbor Il 5nm Offshore To Mid Lake, Lake Michigan

2011-09-24 · near Wilmette Harbor, Winthrop Harbor To Wilmette Harbor Il 5nm Offshore To Mid Lake, Lake Michigan

Event narrative

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

Wider weather episode

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.

View location on OpenStreetMap → (42.2205, -87.6800)

Source: NOAA Storm Events Database, event_id 347273. Narrative written by the NWS forecast office that issued the report.