A light, 4.7-magnitude earthquake struck in Northern California on Wednesday, according to the United States Geological Survey. The temblor happened at 6:34 p.m. Pacific time about 2 miles northwest of Cobb, Calif., or about 70 miles north of San Francisco, data from the agency shows.

An earthquake with a preliminary magnitude of 4.7 struck Lake County on New Year's Day, according to the U.S. Geological Survey.Officials said the earthquake struck at 6:34 p.m. about 2.5 miles northwest of the town of Cobb and 5 miles north of the Geysers in northern Sonoma County.

The quake epicenter was 2 miles north-northwest of Cobb, a small community in the hills south of Clear Lake. The epicenter was 70 miles west of Sacramento and 27 miles north of Santa Rosa. A ShakeAlert was issued to cellphone users in portions of Lake, Sonoma, Napa and Mendocino counties, according to the USGS.