USGS-earthquakes-at00851141.1.20080418T094139.151Z http://earthquake.usgs.gov/recenteqsUS/contacts.htm#at 2008-04-18T12:02:18+00:00 Actual Update Public Geo Earthquake Past Moderate Likely West Coast and Alaska Tsunami Warning Center/NOAA/NWS EQ 5.4 West Salem, IL - PRELIMINARY REPORT An earthquake with magnitude 5.4 occurred near West Salem, IL at 09:36:57.00 UTC on Apr 18, 2008. (This event has been reviewed by a seismologist.) http://earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/at00851141.php http://earthquake.usgs.gov/recenteqsUS/contacts.htm#at EventTime=2008-04-18T09:36:57+00:00 EventIDKey=at00851141 Version=1 Magnitude=5.4 Depth=10.0 km (6.2 miles) HorizontalError=0.0 km VerticalError=0.0 km NumStations=21 NumPhases=21 MinDistance=263.2 km RMSTimeError=1.07 seconds AzimuthalGap=119 degrees 6 miles (10 km) ESE of West Salem, IL; 6 miles (10 km) NE of Bone Gap, IL; 8 miles (13 km) N of Bellmont, IL; 41 miles (66 km) NNW of Evansville, IN; 127 miles (204 km) E of St. Louis, MO 38.501,-87.898 7.8