SAN FRANCISCO—A magnitude 5.1 earthquake rattled the San Francisco Bay Area on Tuesday, causing delays of some commuter trains. There were no immediate reports of damage or injuries.
The U.S. Geological Survey said the 11:42 a.m. quake was centered 12 miles east of San Jose at a depth of about 4 miles. The area is hill country about 40 miles southeast of downtown San Francisco.
Lucy Jones, a veteran California seismologist, told KNTV-TV that the quake happened on the Calaveras fault, one of eight major faults in the Bay Area.
“The Calaveras fault is one that tends to have smaller earthquakes,” Jones said….