2004 Utica earthquake

earthquake
title= 2004 Utica earthquake
date= June 28, 2004
magnitude = 4.2 M_w
countries affected = flag|United States
casualties = none
depth = convert|5|km|mi|1
location = coord|41|44|N|88|92|W|scale:5000000_region:US-IL|display=inline,title

The 2004 Utica Earthquake was a 4.2 magnitude earthquake that occurred on June 28, 2004 at about 1:11 am which affected northern Illinois and was mostly felt in Utica, Illinois and surrounding rural towns. Its epicenter was located two miles south of Prairie Center, Illinois and could be felt as far away as Olive Branch, Mississippi.cite web |url=http://earthquake.usgs.gov/eqcenter/eqinthenews/2004/uskgad/ |title=Earthquake summary |date=2004-06-28 |accessdate=2008-01-02 |author=United States Geological Service]

The earthquake was the first in LaSalle County, Illinois since September 1972. It occurred convert|5|km|mi|1 beneath the surface in a structure associated with the Sandwich Fault Zone. It was not connected with the New Madrid Fault farther south, which has been linked to the Midwest's most serious earthquakes. No injuries were reported, yet thousands of people were startled and awoken in the middle of the night. Three nearby nuclear power plants—LaSalle, Quad Cities, and Dresden—issued low-level alerts, but no damage was found.

References

External links

* [http://earthquake.usgs.gov/eqcenter/eqarchives/poster/2004/20040628.php USGS Earthquake Poster] - Poster of the affected area, including historical data and Generalized Seismic Hazard