The Utah Geological Survey (UGS) has completed a project forming new high-resolution maps of active faults throughout central ...

Another earthquake with a magnitude above 4.0 struck along the Riverside–San Bernardino County line overnight. Wednesday’s ...

Along the remote coast where the San Andreas Fault meets the Cascadia subduction zone, earthquakes too small for humans to ...

On a quiet stretch of central California ranchland, scientists have spent decades trying to turn one of Earth’s most dangerous forces into something almost predictable. Parkfield, perched on the San ...

When it comes to emergencies and natural disasters, one of the main concerns for residents in California is earthquakes. World-renowned seismologist Dr. Lucy Jones says the San Andreas Fault is not ...

Drop. Cover. Hold on. That’s the three-part jingle every Californian learns to stay safe in earthquake country. Scientists forecast a more than 99% chance that earthquakes of 6.7 magnitude or larger ...

A small 3.3 magnitude earthquake struck near San Ramon, California, late Monday night local time, the U.S. Geological Survey (USGS) said. The epicenter, about 2.5 miles from San Ramon, and the quake's ...

An earthquake swarm hit the San Francisco Bay Area on Sunday morning. The cluster of up to eight quakes, ranging from 2.5 to 3.8 on the Richter scale, first occurred from 9:38am to 9:41am around ...

The Carrizo Plain in eastern San Luis Obispo County contains the most strikingly graphic portion of the San Andreas Fault. Sediment cores recovered from the Pacific seafloor suggest that megathrust ...

One of the most dangerous faults in the United States, the Cascadia Subduction Zone, may be able to trigger an earthquake on the San Andreas Fault, a new study says. But some scientists want more ...

To the south, the Pacific and North American plates grind past each other along the San Andreas Fault, occasionally producing devastating earthquakes such as the 1906 San Francisco event. If both of ...