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Seismic Chart from USGS 4/18/2008 5.2 Quake Illinois 04:37am
.PDF (From Hopedale, IL seismometer throughout nation)

USGS Felt Reports Map 4/18/2008 5.2 Quake Illinois 04:37am

USGS Event Statistics 4/18/2008 5.2 Quake Illinois

USGS Report 4/18/2008 3.4 Aftershock Event at 05:36am
USGS Report 4/18/2008 4.6 Aftershock Event at 10:14am
USGS Report 4/21/2008 4.0 Aftershock Event at 12:38am
USGS Report 4/25/2008 3.7 Aftershock Event at 12:31pm
USGS Report 5/1/2008 3.3 Aftershock Event at 12:30am
USGS Report 6/5/2008 3.4 Aftershock Event at 02:13am
USGS Report 6/24/2008 2.9 Aftershock Event at 17:20pm
USGS Report 7/17/2008 3.1 Aftershock Event at 21:58pm

Shake Maps (Did you feel it) Reports

More Information about these Earthquakes from the USGS

FAQ - Earthquake Preparedness from the USGS

About Earthquakes - from the USGS

USGS Quick Look at Past Earthquakes in Illinois

Illinois Earthquake Information from USGS

USGS Research Study of the Wabash Valley Fault Line

Illinois State Geological Survey - Info on Illinois Quakes

.PDF of Fault Systems in Illinois from ISGS

An explaination of Magnitude and Strength of an Earthquake
(Why an 8.7 is 23,000 times stronger than a 5.8)

All the scientific waveforms you ever wanted to see
about the 4/18/08 4:37am 5.2 Illinois Earthquake
(From Saint Louis University Earthquake Center)

Wabash Valley Fault - 'New Kid on the Block'
Scientists ponder at Washington University - St. Louis