Magnitude 4.2 - ILLINOIS

2004 June 28 06:10:51 UTC

Earthquake Details

  • This event has been reviewed by a seismologist.
Location41.443°N, 88.927°W
Depth5 km (3.1 miles) set by location program
Distances 15 km (10 miles) NNW of Ottawa, Illinois
60 km (40 miles) SW of Aurora, Illinois
115 km (70 miles) WSW of Chicago, Illinois
190 km (120 miles) NNE of SPRINGFIELD, Illinois
Location Uncertaintyhorizontal +/- 4.9 km (3.0 miles); depth fixed by location program
ParametersNST= 37, Nph= 37, Dmin=196.8 km, Rmss=0.97 sec, Gp= 72°,
M-type=teleseismic moment magnitude (Mw), Version=9
Event IDuskgad
  • Did you feel it? Report shaking and damage at your location. You can also view a map displaying accumulated data from your report and others.

Earthquake Summary

Small globe showing earthquakeSmall map showing earthquake

Earthquake Summary Map

  • USGS News Release
  • Felt Reports

    mbLg 4.5 (GS). Felt (V) at Earlville, Oglesby, Ottawa and Tonica; (IV) at Chillicothe, Dalzell, Frankfort, Granville, Hinckley, Hinsdale, Ladd, La Salle, Lockport, Marseilles, Mendota, Monee, Paw Paw, Peru, Princeton, Rock Island, Seneca, Sheridan, Somonauk, Sterling, Streator, Sublette and Utica. Also felt (IV) at Milwaukee, Wisconsin. Felt in Illinois, Indiana, Iowa, Michigan, Missouri and Wisconsin.

    Tectonic Summary

    Tectonic Summary

    Earthquake Information for Illinois

    Earthquake Maps

    Bookmark and Share