(CNN) -- People nearly 900 miles away felt a magnitude-5.2 earthquake that shook southern Illinois early Friday, according to the U.S. Geological Survey.
The epicenter of the earthquake-- the strongest in the region in 40 years -- was about seven miles below ground and 38 miles north-northwest of Evansville, Indiana, the USGS said.
No reports of injuries or damage in Wauseon
Full Story Scientists say Midwest quakes poorly understood
Scientists say they know far too little about Midwestern seismic zones like the one that rumbled to life under southern Illinois Friday morning, but some of what they do know is unnerving.
The fault zones beneath the Mississippi River Valley have produced some of the largest modern U.S. quakes east of the Rockies, a region covered with old buildings not built to withstand seismic activity.
Wabash Valley Fault Zone Official USGS Information on the Quake 
Earthquake felt as far as Cleveland 
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