Magnitude 4.5 ILLINOIS
2004 June 28 06:10:51 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
A light earthquake occurred IN NORTHWESTERN ILLINOIS about 10 miles northwest of Ottawa or about 75 miles west southwest of Chicago at 12:10 AM MDT, Jun 28, 2004 (1:10 AM CDT in Illinois). The magnitude and location may be revised when additional data and further analysis results are available. The earthquake was felt in parts of Illinois, Missouri and Wisconsin. There have been no reports of damage.
http://www.whbf.com/Global/story.asp?S=1972778&nav=0zGoOF9oThe geological survey said the three-second quake occurred at a depth of 3.1 miles in a structure associated with the Sandwich Fault Zone. It was not connected with the New Madrid Fault further south, which has been responsible for the Midwest's most serious earthquakes.
Initial reports indicated no major damage from the temblor, although police agencies and radio stations within the quake area were inundated with telephone calls.
"It was mayhem around here for a while," said Pattie Burke, a dispatcher for the Ottawa Police. "We had more than 200 calls from residents in a short period of time, all of them wanting to know what had happened. A lot of them seemed to think a truck had crashed into their house.
"Here in the station, it felt like an aircraft was about to crash right here."
The quake was felt at three nuclear power plants in Illinois: Quad Cities, LaSalle and Dresden.
http://abclocal.go.com/wls/news/062804_ns_earthquake.html