CHICAGO -- After dealing with an tornado last week, many Wisconsinites were awakened by an earthquake Monday morning.

The earthquake originated in Illinois and hit at 1:11 a.m. It could be felt from Missouri to Wisconsin and Iowa.

In Madison, workers at the Johnson Bank building reported feeling the floors bounce a little for about four or five seconds.

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Midwest Quake Gives Early Wake Up Call

No injuries were reported.

Brian Lassige, a geophysicist with the U.S. Geological Survey in Colorado, said the quake was magnitude 4.5, and its epicenter was about eight miles northwest of Ottawa in northern Illinois, close to the small village of Troy Grove. The rural area is about 70 miles west of Chicago.

There are no reports of major damage from the temblor, although police agencies were inundated with telephone calls.

The quake was felt at three nuclear power plants in Illinois: Quad Cities, LaSalle and Dresden.

Reports of the shaking came from at least as far east as Valparaiso, Ind., and as far west as the Quad Cities, and from Wisconsin in the north to the St. Louis area in the south.

Joe Knapp of Delafield, Wis., just west of Milwaukee, said he was asleep and awoke when the bed began shaking. "Everything was just rolling back and forth," Knapp said.

According to research at the University of Wisconsin-Green Bay, there have been numerous earth quake "events" in Wisconsin and Upper Michigan. ( See Map )

News 3's Joel DeSpain talked with those rattled out of their beds this morning. Watch his report tonight on News 3.