An earthquake of this magnitude can happen just about anywhere on the earth's crust, even places that don't have a history of earthquakes, said Rafael Abreu, a geophysicist with the U.S. Geological Survey's National Earthquake Center in Golden, Colorado.
Wednesday's earthquake was a very minor one with weak to light shaking and that typically results in no damage, the report said.
A November 2013 earthquake hit the Chicago suburbs – that time on the southwest side – following a quarry blast in McCook. No reports of damage or injuries resulted.
The city of McHenry was the epicenter of a 2.4-magnitude earthquake in January 2012.
One of the largest earthquakes to hit Illinois occurred in April 2008 when a 5.4-magnitude earthquake hit southern Illinois causing minor structural damage. The impact was felt through the Midwest and as far away as Georgia, Nebraska and southern Ontario.
- Emily K. Coleman