SAN FRANCISCO (AP) -- An earthquake has shaken the San Francisco Bay area.
The U.S. Geological Survey has given it a preliminary magnitude of 4.2. It was enough to set off alarms and break windows, but there have been no immediate reports of injuries.
Scientists at the U.S. Geological Survey describe it as a shallow quake, located about two miles from Oakland. They say it could be felt for up to 10 seconds as far north as Santa Rosa, California, and as far south as San Jose.
Pacific Gas and Electric reports more than 1,000 customers lost power in the Oakland area.
A spokesman for BART, the Bay Area Rapid Transit system, says crews have inspected tracks and have found no damage.