SACRAMENTO, Calif. — A preliminary magnitude 6.0 earthquake struck over 180 miles west of Bandon, Oregon Thursday. The U.S.

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

San Ramon has been hit by scores of tremors since mid-November.

A swarm of small earthquakes has been rattling a Bay Area city for more than a week in Northern California. More than 90 quakes have hit the San Ramon area since Nov. 9, the U.S. Geological Survey ...