A 4.9-magnitude earthquake and several aftershocks rattled the Inland Empire on Monday night, according to the United States ...

A hidden chunk of an ancient tectonic plate is stuck to the Pacific Ocean floor and sliding under North America, complicating ...

By tracking swarms of very small earthquakes, seismologists are getting a new picture of the complex region where the San ...

A small town in California was hit by earthquakes once every 22 years for over a century, setting the stage for a major ...

Many of the state's largest earthquakes have struck near the junction, where the Pacific, North American and Gorda plates ...

Some of California's biggest earthquakes have occurred on lesser-known fault areas, including both the Ridgecrest quake and ...

In California, the ground doesn’t need much of a warning to remind people who’s really in control. The state carries the ...

Scientists are uncovering a hidden and surprisingly complex earthquake zone beneath Northern California by tracking swarms of ...

A minor earthquake struck near Petrolia, California. This small tremor serves as a reminder of California's constant seismic ...

Scientists say the temblor, which was followed by a magnitude 3.5 aftershock, is unlikely to lead to larger event.

A 3.6 magnitude earthquake struck Indio on Tuesday morning, just hours after several temblors shook the area on Monday ...