RIVERSIDE COUNTY, Calif. - An earthquake rocked Riverside County on Friday morning, according to the U.S. Geological Survey. The USGS said a preliminary 3.6-magnitude earthquake occurred at 9:43 a.m.

Southern California was rocked by a trio of earthquakes in the past 12 hours. Two of the quakes struck in 10 minutes, with ...

A 3.6-magnitude earthquake shook parts of Southern California, the U.S. Geological Survey reported. The about 10-mile deep ...

Some earthquakes are followed by a larger earthquake, in which case the first quake would then be called a foreshock. For ...

An earthquake with a preliminary magnitude of 3.6 rattled the San Jacinto Valley on Friday morning. According to the U.S. Geological Survey, the quake struck at 9:43 a.m. The epicenter was about 6 ...

A magnitude-2.7 earthquake was reported Friday morning in the San Bernardino County community of Rialto. The quake was centered just north of Rialto and Fontana. Shaking was reported at about 9:30 a.m ...

A series of more than 100 earthquakes has hit Northern California, shaking up the Geysers geothermal steam field in Sonoma ...

A preliminary 3.6-magnitude earthquake struck near Idyllwild at 9:43 a.m. on Friday, according to the U.S. Geological Survey ...