A swarm of at least six earthquakes reaching up to magnitude 2.9 rattled San Ramon near San Francisco, the U.S. Geological ...
CONTRA COSTA COUNTY, CA - A preliminary 2.3 magnitude quake was detected close to San Ramon Saturday afternoon, the U.S. Geological Survey reported.
An earthquake of magnitude 2.9 shook the East Bay on Saturday afternoon, according to the United States Geological Survey.