Historic Earthquakes

Fort Tejon, California
1857 01 09 16:24 UTC
Magnitude 7.9

Largest Earthquake in California

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.