COBB, Calif. – A 3.3-magnitude quake was reported in the Cobb area late Thursday night.

In a preliminary report the US Geological Survey said the quake occurred at 11:59 p.m.

It was centered four miles south of Cobb, 14 miles south southwest of Clearlake and 12 miles northeast of Healdsburg, and was recorded at a depth of 1.2 miles, the survey said.

Initial shake report were submitted to the US Geological Survey from residents in Middletown, Calistoga and Healdsburg.

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