The 4.1-magnitude quake was reported at 4:54 a.m., according to the US Geological Survey.
The USGS said the quake was centered 2.1 miles east southeast of Black Oaks in Sonoma County and 13.5 miles southwest of Clearlake. It was recorded at seven-tenths of a mile.
As of Monday night, 75 shake reports from around Lake, Napa and Sonoma counties and beyond were submitted to the USGS. The report coming from the farthest distance was filed in Arcata.
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