Overnight Earthquakes Rattle San Ramon

A preliminary 2.9 magnitude earthquake struck the East Bay Sunday night, followed by a 2.6 magnitude at about 2:48 a.m. Monday. Both quakes were centered about a mile from San Ramon, U.S. Geological Survey officials said. The first quake hit at 10:13 p.m., according to USGS officials.

The quakes are just two of hundreds of small quakes that have struck the East Bay in the past few weeks. Officials say the first quake was on the Calaveras Fault while the second was on the Mount Diablo Thrust Fault.

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• Another Morning Earthquake Shakes East Bay

The quakes were reportedly felt as far away as Pleasanton, Alameda, Dublin, San Leandro and Lafayette. Not damage or injuries have been reported as a result of the temblors.

October 17 marked the anniversary of the devastating Loma Prieta earthquake, which interrupted Game 3 of the “Bay Bridge” World Series in 1989.

Related:

• Recalling When Loma Prieta Interrupted the 1989 World Series ... and What Happened Next
• Earthquake Swarm Continues, Experts Predict a Couple More Weeks of Shakers

Californians prepared for future earthquakes during the annual the Great California ShakeOut drill of 2015 earlier this month.

On Aug. 24, 2014, a 6.1-magnitude earthquake in the North Bay killed one person, injured more than 200 others and caused millions of dollars in damage. A 4.0-magnitude quake that struck the Hayward fault in the East Bay in August rattled nerves, and elicited some unique responses that were captured on camera.

Additional quake coverage on Patch:

• WATCH: Local Weatherman Reacts To East Bay Earthquake While On Air
• Rude Awakening! Watch These Two Cute Dogs React To East Bay Earthquake
• Are You Really Ready for the Next Big California Earthquake?
• NAPA QUAKE 2014: Click here for Patch’s Full Earthquake Coverage

Bay City News contributed to this report. Photo via Shutterstock.