A pair of 3.3 magnitude earthquakes were reported near Tres Pinos on Friday night, the US Geological Survey reported.

California has been rocked by at least nine earthquakes since Thursday, raising fears that the "Big One" could be near.

Fire- and storm-ravaged Malibu, Calif., endured two relatively minor earthquakes followed by another in Idyllwild Saturday ...

The ground keeps shaking in Southern California as the coastal city of Malibu was struck by two earthquakes on Valentine's ...

An earthquake with a preliminary magnitude of 3.5, the third above 3.0 in Southern California in the last several hours, struck the Inland Empire on Saturday afternoon. According to the U.S.

Seismologists are monitoring California's fault lines for the 'Big One,' a major earthquake that could cause widespread ...

Chief Mitigation Officer Janiele Maffei of the California Earthquake Authority explains how to determine if your house is vulnerable to earthquake damage and what options are available to protect it.

An earthquake with a preliminary magnitude of 3.5, the third above 3.0 in Southern California in the last several hours, struck the Inland Empire on Saturday afternoon. According to the U.S ...