July 29, 2008

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1) Great Fort Tejon earthquake
Occurred: January 9, 1857
Magnitude: 8.25 2) Great 1906 earthquake
Occurred: April 18, 1906
Magnitude: 8.25 3) Kern County earthquake
Occurred: July 21, 1952
Magnitude: 7.7 4) Owens Valley
Occurred: March 26, 1872
Magnitude: 7.6 5) Landers
Occurred: June 28, 1992
Magnitude: 7.3 		6) Cape Mendocino
Occurred: April 25, 1992
Magnitude: 7.2 7) Imperial Valley
Occurred: May 19, 1940
Magnitude: 7.1 8) Loma Prieta
Occurred: October 18, 1989
Magnitude: 7.1 9) Hector Mine
Occurred: October 16, 1999
Magnitude: 7.1 10) Wrightwood
Occurred: December 8, 1812
Magnitude: 7.0
Source: USGS