3.1 Quake Rattles San Joaquin County
A 3.1 magnitude earthquake has hit Northern California.

The quake was centered about 8 miles southwest of Stockton and 7 miles north of Lathrop, and was about 8 miles deep into the earth.

There have been no reports of damage or injuries into our newsroom from this earthquake.

It happened around 4 a.m. We asked the Police Chief in Lathrop if there were any calls into their dispatch center reporting anything, but there was nothing on their dispatch log.

However, there are quite a few people in Lathrop who commute to the Bay area for work, and may have just not reported feeling anything as they were getting ready for work.

The earthquake in Lathrop is related to a 3.7 quake in May 2002 in Rio Vista, according to the USGS. " There is a great deal of concern about the Delta and potential seismic vulnerability in the Delta, so just getting an event is useful to us, " said USGS Geophysicist Jack Boatwright.