Up to 16-foot waves forecast near Chicago

Cooler weather is landing right on cue for the first day of autumn. But first, the system delivering the cooler temps will soak the eastern third of the country, bring strong winds and 10 to 18-foot waves on some of the Great Lakes.

source https://www.cnn.com/2021/09/22/weather/big-waves-great-lakes-forecast-autumn/index.html