SAN RAMON — A sense of shakiness in the Tri-Valley only grew Monday morning when three earthquakes rattled the area in the course of about 100 minutes. More than 30 quakes, as small as magnitude 1.5, ...

Around 90 small earthquakes have struck near San Ramon in the East Bay this month. It’s at least the sixth time a series of tiny quakes has lit up that area since 1970, including the most recent swarm ...

Two earthquakes struck the Central Coast less than 10 minutes apart on Thanksgiving Day, according to officials. The U.S. Geological Survey said a magnitude 3.9 struck about 3 miles south of San Juan ...

A series of three earthquakes shook the South Bay early Wednesday, according to the U.S. Geological Survey. The biggest of the three was a magnitude 4.0 shaker that happened at 6:16 a.m. about 5 miles ...

This is read by an automated voice. Please report any issues or inconsistencies here. San Ramon has been rocked by more than 75 earthquakes since November, with a magnitude 4 quake Friday night ...

This is read by an automated voice. Please report any issues or inconsistencies here. A magnitude 3.8 earthquake struck Riverside County near Idyllwild on Thursday evening, followed by a 3.5 temblor.

The most recent, a 1.2-magnitude tremor, hit about 2 ½ miles northeast of San Ramon at 4:05 p.m. Sunday, Nov. 23. Getty Images/iStockphoto A swarm of small earthquakes has been rattling a Bay Area ...

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 ...