The Chicago Tribune reports a medium-sized Illinois earthquake of 4.3 on the Richter Scale hit 48 miles north of Chicago near DeKalb, and was felt by residents in Southern Wisconsin and Iowa early Wednesday.
The USGS reports "a magnitude 4.0 eastern U.S. earthquake typically can be felt at many places as far as 60 miles from where it occurred, and it infrequently causes damage near its source. A magnitude 5.5 eastern U.S. earthquake usually can be felt as far as 300 miles from where it occurred, and sometimes causes damage as far away as 25 miles."
Earthquakes are rare in the midwest, but do happen. The strongest reported one was 7 on the Richter scale below St. Louis 200 years ago.
Other than shaking dishes in homes, there's no word of major damage.
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