The most recent temblor struck at 11:40 p.m. and had a preliminary magnitude of 2.3 with an epicenter about 6 miles northeast of San Jose, according to USGS.
USGS did not report the depth of the epicenter. Two earthquakes earlier Saturday morning struck 10 miles north of Morgan Hill and 15 miles east-southeast of San Jose.
The first earthquake, with a 2.9 magnitude, struck at about 5 a.m., with an epicenter 4.2 miles deep.
The second one struck at about 6:25 a.m., had a preliminary magnitude of 2.0. and had an epicenter about 4 miles deep.