COBB, Calif. – A 3-magnitude earthquake was reported near The Geysers geothermal steamfield on Saturday.

A preliminary report from the US Geological Survey said the quake occurred at 8:26 a.m. Saturday.

The quake was centered one mile northwest of The Geysers and 13 miles southwest of Clearlake, at a depth of four-tenths of a mile, according to the report.

Two shake reports – one from Los Altos, one from San Francisco – were submitted to the US Geological Survey.

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