A magnitude 3.3 earthquake struck the San Ramon area in California late on Sunday night, according to the U.S. Geological Survey (USGS).
The tremor struck around 2.5 miles southeast of San Ramon and had a depth of 5.2 miles. The USGS recorded the quake at 11:21 p.m. local time.
The Context
Frequent quakes are typical in California due to its placement over multiple major fault systems, the best known being the approximately 750‑mile San Andreas Fault.
What To Know
USGS data showed that several smaller quakes occurred shortly after the initial 3.3-magnitude tremor. These included events of 2, 2.3, 1.5, 1.8 and 2.8. As of around 5 a.m. Eastern time, at least seven earthquakes had been recorded in the area.
San Ramon sits along the Calaveras Fault, a source of the area’s regular seismic activity…