Rare Great Lakes earthquake rumbles southern Lake Michigan

A rare earthquake beneath southern Lake Michigan was felt across parts of northeastern Illinois Wednesday afternoon, July 8, 2026, surprising residents from Chicago’s North Shore to surrounding suburbs.

According to the U.S. Geological Survey, the magnitude 2.9 earthquake struck at approximately 2:38 p.m. Its epicenter was located about 13 miles northeast of Evanston, Illinois, beneath the waters of southern Lake Michigan at a depth of roughly three miles.

While a 2.9 magnitude earthquake is considered relatively weak and is not expected to cause damage, dozens of people reported feeling brief shaking or rumbling. The USGS says earthquakes are uncommon in the Great Lakes region, making Wednesday’s event an unusual occurrence. Seismic waves in the central and eastern United States also tend to travel farther than those in the western U.S., allowing smaller earthquakes to be felt over a much larger area.

No injuries or damage were immediately reported.