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Small earthquake jolts San Francisco area

October 20, 2011 12:00:00 AM PDT
A small earthquake with a preliminary magnitude of 3.9 struck the San Francisco area on Thursday afternoon.

The quake, centered about one mile east-southeast of Berkeley, was first reported as a 4.2, but it was downgraded.

The quake hit at 2:31 p.m. and was felt in the East Bay area and San Francisco. There were no immediate reports of damage or injury.