Monday Morning Quake Hits East Bay

SAN RAMON, CA — A 2.8-magnitude earthquake struck San Ramon at 3:34 a.m. Monday, according to the U.S. Geological Survey.

The quake struck just north of Bollinger Canyon Road and east of Alcosta Boulevard, near the Bridges Golf Club, according to USGS. It had a depth of 8.9 kilometers.

Nearby residents reported weak to light shaking, according to USGS's "Did You Feel It?" map.

It is the latest of hundreds of quakes that have struck San Ramon since November, including another 2.8 that hit the morning of Friday, March 13.

The city sits along the Calaveras Fault, and several micro-faults along the main fault result in swarms of quakes. When fluids like water or gas move through a complex web of cracks in tiny faults, this can trigger many dozens of small quakes in quick succession.

On Feb. 27, the city of San Ramon hosted a Q&A with local mayors, Supervisor Candace Andersen, SRVFPD Chief Jonas Aguiar, and UC Berkeley seismologist Dr. Angie Lux.

SEE ALSO:

• Quakes, Swarm Hit Multiple Corners Of NorCal In 24 Hours
• Friday Morning Quake Strikes East Bay: Did You Feel It?
• Why Does San Ramon Get So Many Earthquakes?
• 2 Late Night Quakes Strike East Bay
• San Ramon To Host Earthquake Swarm Q&A With Seismologist, Fire Chief, Mayors
• San Ramon Details Earthquake Readiness Policies
• How Prepared Are You For An Earthquake? 10 Things You Need