3.9 preliminary magnitude earthquake strikes Lake County

COBB, Calif. (KGO) -- A 3.9 preliminary magnitude earthquake struck Lake County this morning.

The earthquake struck about 4:45 a.m. and was centered near Cobb, about 23 miles north of Santa Rosa. The temblor had a depth of 4.1 km.

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There are no reports of damages or injuries at this time.