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Earthquake Jolts San Francisco Bay Area

An earthquake jolted Northern California residents awake Friday, breaking glass and rattling nerves, although there were no immediate reports of injuries.

The earthquake was recorded about two miles east of Oakland and had a preliminary magnitude of 4.2, according to the U.S. Geological Survey. The quake, which struck at about 4:40 a.m., was felt on both sides of the San Francisco Bay and was reported as lasting up to 10 seconds.

"It appears to have been widely felt, although it was a light quake," Leslie Gordon of the USGS told CBS San Francisco affiliate CBS 5. "We do live in earthquake country."

Power was knocked out in the Oakland area minutes after the quake with more than 1,000 customers affected, a Pacific Gas & Electric Co. spokesman said. Crews were investigating what caused the outages.

There were reports of items falling off shelves and broken glass. A dispatcher at the Oakland Police Department said police were getting calls about alarms going off.

In Berkeley, an employee at a Safeway grocery store said two large windows were broken but there were no injuries at the store.

A spokesman for the area's BART commuter trains said crews inspected the tracks and found no damage.

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