NORTH COAST, Calif. – A moderate-sized earthquake was reported west of Cobb early Tuesday.

The 4.1-magnitude quake was reported at 12:46 a.m. Tuesday in Sonoma County, according to the US Geological Survey.

The quake was centered 5.4 miles west of Cobb, 14.2 miles north of Healdsburg and 14.5 miles southwest of Clearlake, at a depth of just under a mile, the survey reported.

By 2 a.m., more than 30 shake reports from Lake, Mendocino, Napa and Sonoma counties had been submitted to the US Geological Survey.

Email Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it. . Follow her on Twitter, @ERLarson, or Lake County News, @LakeCoNews.