The quake occurred at 5:57 p.m. at a depth of 43.7 miles, according to the US Geological Survey.
It was centered 12 miles west of Esparto, 25 miles southeast of Clearlake, 30 miles north of Napa and 30 miles west northwest of Davids, the survey reported.
The US Geological Survey received two shake reports on the quake – one from Santa Rosa and one from Fort Bragg.
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