RIVERSIDE COUNTY, CA - A preliminary 2.4 magnitude quake was reported close to Anza around midnight Sunday, according to the U.S. Geological Survey.

CONTRA COSTA COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.5 magnitude quake rattled close to San ...

A minor, 3.5-magnitude earthquake struck in the San Francisco Bay Area on Thursday, according to the United States Geological ...

On a seemingly ordinary Sunday morning, residents of the East Bay were jolted awake by a series of earthquakes, igniting a blend of curiosity and concern about seismic activity in California. This ...

The Water Reclamation District is expanding its treatment of the largest brackish groundwater plume in the Los Angeles County ...

When will "The Big One" hit the U.S. West Coast? Nobody knows, but should it happen, science can give us a good idea of its ...

An earthquake swarm hit the San Francisco Bay Area on Sunday morning. The quakes, ranging from 2.9 to 3.8 on the Richter ...

A 5.7 magnitude earthquake struck in Mexico's Gulf of California early on Friday morning, the U.S. Geological Survey (USGS) said. The earthquake had a depth of 6.2 miles, and its epicenter was 46.6 ...

Southern California is a well-known hot spot for earthquakes. Residents of the west coast state live in one of the most ...

The decade-long final phase of the Golden Gate Bridge seismic retrofit will begin in 2026, reinforcing the 87-year-old ...

UD researchers engage future marine scientists during video call from aboard the R/V Roger Revelle, currently at sea off the ...

Researchers are deliberately setting off real (small) earthquakes to understand how to gauge the danger of a fault line ...