A preliminary 2.1-magnitude earthquake struck near San Joaquin Hills in Orange County, according to the U.S. Geological ...

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

An earthquake with a magnitude of 3.0 shook residents near San Bernardino County on Monday night, according to the U.S.

The earthquake was centered in Charneca de Caparica at a depth of 10 kilometers (about 6.2 miles). The USGS said it received ...

There were a few reports of weak shaking after a magnitude 2.7 quake occurred Sunday shortly before 8 p.m. in the Pacific ...

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

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

A magnitude-3.5 earthquake was reported Saturday afternoon in the San Jacinto Mountains in Riverside County. The quake at ...

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.

LOS ANGELES COUNTY, Calif. — The Malibu area was rattled by a second earthquake within a roughly seven-hour period, a ...

A minor, 3.5-magnitude earthquake struck in Southern California on Saturday, according to the United States Geological Survey ...

And a 2.9 magnitude earthquake struck 10 miles west-southwest of Petrolia in Northern California at around 11:40 a.m. on ...