A swarm of at least a dozen earthquakes reaching up to magnitude 3.9 rattled San Ramon near San Francisco, the U.S. Geological Survey reports. The other quakes in the Saturday, Dec. 21, swarm ranged from magnitude 1.3 to 3.0, according to the USGS. × …

… know- What is an earthquake swarm?An earthquake swarm is a sequence of many …

SAN RAMON — A cluster of earthquakes struck the San Ramon area Friday night, continuing a pattern of seismic activity in recent weeks, according to the U.S. Geological Survey. Things kicked off at 7:41 p.m. with a magnitude 2.5 centered 3.1 miles southeast …

… been rattled by multiple earthquake swarms over the past four days … this place keeps having earthquake swarms due to a lot … the 2015 San Ramon earthquake swarm found that the area … could help explain why these earthquake swarms occur. Roland Burgmann, a …

… other dots. Image: USGS New earthquake swarms in recent days have put … “when, not if”, ongoing moderate earthquake swarms near the Bay Area along …

… . Residents have been experiencing earthquake swarms for nearly a week, … Experts weigh in as earthquake swarm hits for 4th day in … showed that there were similar earthquake swarms in 1970, 1976, 2002, … this place keeps having earthquake swarms due to a lot …

… weeks. Thursday's earthquake swarm broke out less than … three straight days of earthquake swarms, with over a dozen … after Thursday's earthquake swarm, which included a magnitude … (Pictured) Although the latest earthquake swarm did not take place near …

… hit by a significant earthquake swarm for the fourth day … been rattled by multiple earthquake swarms over the past four … Sam Rohrer about the earthquake swarms that have been hammering … , this latest series of earthquake swarms began just three days after …

… . Why swarms make people suspicious Earthquake swarms, clusters of many small quakes …

… (USGS). Residents have been experiencing earthquake swarms for about a week. California …