NORTHERN CALIFORNIA (KGTV) -- A magnitude 4.2 earthquake shook Napa and Sonoma Counties Wednesday night, shortly before 10 p.m.
The United State Geological Survey reports that the quake epicenter was southeast of Cobb, a census-designated community in Lake County.
The earthquake happened at 9:55 p.m., about 40 miles north of Santa Rosa and 50 miles north of Napa.
*This is a developing story. 10News will have the latest tonight on 10News at 11 p.m.