KEY POINTS
- A magnitude 3.3 earthquake struck near San Ramon along the Calaveras Fault, with no reported damage or injuries.
- The tremor followed a recent cluster of small quakes in the same area, highlighting ongoing seismic activity in the East Bay.
- Experts from the USGS and regional universities confirm there is no evidence the San Andreas or Hayward faults are 'breaking', noting the event was typical for the region
A 3.3-magnitude earthquake shook San Ramon late Monday night, giving residents across the East Bay a brief jolt but causing no reported damage or injuries. According to the US Geological Survey, the quake struck at 10:47pm PST at a depth of 5.6 miles, centred along the Calaveras Fault, a major branch of the San Andreas system.
