United States Geological Survey


Swarm Of Earthquakes Rattles East Bay

There were three earthquakes in five hours in the East Bay Saturday.



New Quake Faults Uncovered West Of Lake Tahoe

Scientists studying earthquake faults in the mountains west of Lake Tahoe say new high-resolution imaging technology has uncovered more substantial seismic hazards than previously believed.


The CBS 5 seismograph

Bay Area Wakes Up To Magnitude 4.0 East Bay Quake

The quake was centered a mile north of El Cerrito, four miles north of Berkeley. Phone-in reports indicate that the quake was felt across much of the East Bay as well as the North Bay and San Francisco, according the the United States Geological Survey website.


California Earthquake

Small Quake, Aftershock Hit Berkeley Overnight

A 2.3-magnitude earthquake struck just outside Berkeley late Wednesday night, followed by a 1.8-magnitude aftershock Thursday morning, according to the U.S. Geological Survey.