A 3.9 magnitude earthquake struck south of the Bay Area, California, on Oct. 5.
The U.S. Geological Survey (USGS) said the quake struck 3 miles deep and about 2 miles southwest of Tres Pinos, California, at around 6 a.m. local time.
A 3.9 magnitude earthquake struck south of the Bay Area, California, on Oct. 5.