Historic Earthquakes

Southern Illinois
1968 11 09 17:01:40.5 UTC
Magnitude 5.4
Intensity VII

Largest Earthquake in Illinois

Isoseismal Map

Isoseismals are based on intensity estimates from data.

Isoseismal Map

Abridged from Seismicity of the United States, 1568-1989 (Revised), by Carl W. Stover and Jerry L. Coffman, U.S. Geological Survey Professional Paper 1527, United States Government Printing Office, Washington: 1993.