Lake Michigan’s deadly ‘freak wave’ of 1954 is Chicago folklore. Turns out it was a meteotsunami. And they happen pretty often. – Chicago Tribune

As beach season approaches, research suggests Chicago is pummeled by more meteotsunamis — an obscure type of wave that can crash ashore for many minutes at a time and pose dangers to swimmers and boaters — than anywhere else in the Great Lakes.
— Read on www.chicagotribune.com/news/ct-met-lake-michigan-meteotsunami-waves-20190415-story.html