A swarm of a half-dozen earthquakes reaching up to magnitude 2.9 rattled San Ramon in California near San Francisco, the U.S. Geological Survey reports.
The other quakes in Saturday’s swarm ranged from magnitude 1.2 to 2.8, according to the USGS.
San Ramon was hit earlier by a swarm of more than 90 quakes starting Nov. 9, The Sacramento Bee previously reported. On Dec. 13, six more small quakes hit the city and another dozen struck Dec. 20…