The Bay Area fault system and the spot (red star) where the Hayward Fault branches off from the Calaveras Fault. The white lines indicate faults recognized by the USGS.

SAN FRANCISCO BAY AREA, CA — An earthquake with a preliminary ... according to the United States Geological Survey Shake Map. The Calaveras Fault, a major branch of the San Andreas Fault ...

From Napa to Santa Cruz, many Bay Area residents say they felt the big jolt of a 3.9 earthquake on the Calaveras fault in the East Bay. It struck at 7:46 p.m. Monday night in Dublin in the hills ...

GILROY, California (CNN) --A moderate earthquake -- followed by five aftershocks -- shook the San Francisco Bay area Monday night, according to the U.S. Geological Survey's National Earthquake ...

A series of earthquakes ... two other faults that run through the Bay Area, the Paicines and San Andreas, could see some action. One concern on the East Bay fault specifically is that it is made of a ...

An earthquake with a preliminary magnitude of 4.5 was recorded in San Benito County and felt in parts of the Bay Area on April 4, 2023. Courtesy U.S. Geological Survey. A 4.5-magnitude earthquake ...