A magnitude 4.0 earthquake that struck in the Santa Ana Mountains on Thursday morning was felt throughout much of Southern California, from northern L.A. County to San Diego.

Below California’s famed beaches, mountains and metropolitan areas lies a sinister web of earthquake faults — some so infamous that their names are burned into the state’s collective ...

California was rocked by a seventh earthquake in less than 24 hours. More than half of the events hit along the San Andreas fault, ... Santa Ana and Santa Clara Rivers.

The last major earthquakes on the San Andreas fault were in 1857 and 1906. The Fort Tejon earthquake of 1857 was a 7.9 magnitude, which caused ground fissures in the Los Angeles, Santa Ana and ...

Dec. 1, 2011 -- The fiercest Santa Ana winds in a decade swept through Southern California on Wednesday night, knocking down trees and leaving hundreds of thousands of people without power. High ...

A 3.2 magnitude earthquake occurred near Lake Elsinore on Friday evening, according to the USGS. 24/7 Live Los Angeles Orange County Inland Empire Ventura County California Welcome, Mickey ...

FONTANA, Calif. -- A 4.2-magnitude earthquake struck one mile east of Fontana Saturday morning. Fontana is a city of 203,003 residents in San Bernardino County, California. The quake hit the area ...

A magnitude 4.2 earthquake hit southern California on Wednesday evening. The quake hit at 7:43 p.m. local time about 2 miles (3 kilometers) southwest of San Bernardino, according to the U.S ...