SAN DIEGO COUNTY, CA - A preliminary 2.0 magnitude quake struck close to Lake Henshaw on Thursday morning, the U.S.

A nearly 5.0 magnitude earthquake was reported near Indio, California, and was felt in San Diego, Orange County and Temecula.

A 5.2 magnitude earthquake on Monday rattled homes and businesses in Ramona, but no significant damage was reported, officials said. The quake shook much of Southern California and Tijuana just after ...

A 3.3 magnitude earthquake struck off the coast of Orange County, California, causing weak to light shaking to be felt as far north as Fullerton and Anaheim, and as far south as Mira Mesa and Scripps ...

A magnitude 3.0 earthquake struck near San Ramon early Monday morning, according to the U.S. Geological Survey.

A preliminary magnitude-3.8 earthquake was reported Tuesday near Indio after a day of shaking in the Riverside County community. The quake late Tuesday morning, initially listed at magnitude-3.6, was ...

Improving tsunami hazard assessments depends on understanding what happens at the moment an earthquake ruptures beneath the seafloor, especially near ...