The largest of the 19 earthquakes measured by the U.S. Geological Survey was a magnitude 4.2 shaker that was centered about ...

CONTRA COSTA COUNTY, CA - According to the U.S. Geological Survey, a preliminary 2.3 magnitude quake occurred near San Ramon ...

SONOMA COUNTY, CA - Friday morning, a preliminary 2.2 magnitude quake was reported close to Cobb, according to the U.S.

A new study claims that an 80-100-foot-wide layer of clay exacerbated the 2011 earthquake.

Earthquakes usually strike without warning. But sometimes they come in clusters — dozens or even hundreds of small quakes concentrated in one area over days or weeks. Geologists call these clusters ...

Since Nov. 9, there have been 91 earthquakes of magnitude 2.0 and above — the largest being a 4.0 on Dec. 19 — in the East ...

The USGS Earthquake Notification Service (ENS) has been providing fast, reliable alerts to thousands of people around the world for 20 years, allowing them to stay informed and prepared for ...

Over the last few days, the Coachella Valley has experienced more than 20 earthquakes, causing concern among some residents.

When an earthquake measuring 2.2 on the Richter scale shook the area earlier this week, concerns arose about potential ...

With the New Madrid Seismic Zone in southeast Missouri, it is especially important to prepare for an earthquake.