The quake occurred at 10:41 a.m. Monday, according to the US Geological Survey.
The survey said the quake was centered three miles east southeast of Cotati, five miles north northwest of Petaluma and 10 miles south southeast of Santa Rosa, at a depth of 4.3 miles.
Shortly before 8 p.m. Monday the US Geological Survey had received 829 shake reports from 56 zip codes around California, including as far south as Fresno.
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