The magnitude 4.3 quake occurred at 10:40 a.m., and the U. S. Geological Survey pinpointed its location at 11 miles north of Morgan Hill, seven miles east of Seven Trees and 16 miles east-southeast of San Jose's City Hall. There were no reports of damage.
David Oppenheimer, a seismologist with the geological survey in Menlo Park, said the quake originated about 6.2 miles beneath the Earth's surface along a small unnamed fault that is one of several located about two miles east of the far more active Calaveras Fault.
This article appeared on page B - 2 of the San Francisco Chronicle
Location of Morgan Hill within California.A light earthquake, measured at a magnitude of 4.3, struck the San Francisco, California region at 10:40 AM Pacific Standard Time (PST) on Monday morning. The earthquake was described as "short, but strong" by a dispatcher for the Morgan Hill Police Department. The quake was originally reported as having a magnitude of 4.4.

According to the US Geological survey, the epicentre of the quake was approximately eleven miles north of Morgan Hill, or about 16 miles southeast of San Jose.

No immediate damage has been reported, but Bay Area Rapid Transit (BART) trains were delayed for five to ten minutes while inspectors searched for any damage.

The earthquake was felt as far away as Santa Rosa and Napa to the north and Soledad to the south.