The U.S. Geological Survey reported a magnitude 3.3 earthquake southeast of San Ramon at 10:47 p.m. on Monday night.

A small 3.3 magnitude earthquake struck near San Ramon, California, late Monday night local time, the U.S. Geological Survey ...

CONTRA COSTA COUNTY, CA - A preliminary 2.6 magnitude quake was recorded near San Ramon Monday morning, the U.S. Geological ...

This is read by an automated voice. Please report any issues or inconsistencies here. New research suggests the San Andreas fault and the Cascadia subduction zone could produce devastating ...

When the tectonic subduction zone beneath the Pacific Northwest moves, it does so in dramatic fashion. Not only is ground shaking from a magnitude 9+ earthquake incredibly destructive, the event ...

This is read by an automated voice. Please report any issues or inconsistencies here. A series of small earthquakes hit near the Big Bear area in San Bernardino County starting late Saturday night ...

They are two of the West Coast's most destructive generators of huge earthquakes: the San Andreas fault in California and the Cascadia subduction zone offshore of California's North Coast, Oregon, ...

Julia Shumway / Oregon Capital Chronicle The so-called “Big One” or Cascadia Subduction Zone earthquake expected to trigger disruptive quakes throughout the West Coast could cause more damage than ...