A research group has used an active subsea cable to measure seismic tremors on the Pacific seabed. Political obstacles now ...

SAN LUIS OBISPO COUNTY, CA - A 2.2 magnitude quake was registered close to Templeton Friday morning, the U.S. Geological ...

CONTRA COSTA COUNTY, CA - Monday afternoon, a preliminary 2.4 magnitude quake was reported near San Ramon, according to the U ...

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A swarm of at least six earthquakes reaching up to magnitude 2.9 rattled San Ramon near San Francisco, the U.S. Geological Survey reports.