A preliminary 4.0 magnitude earthquake struck early Friday in Mendocino County, according to the United States Geological Survey.
The quake, which shook at about 4:18 a.m., was centered about 27 miles north of Ukiah in the Mendocino National Forest, the USGS said.
Watch NBC Bay Area News free wherever you are
WATCH HERENo other information was immediately available. Updates to come.
Are you prepared for the next big one?
Get a weekly recap of the latest San Francisco Bay Area housing news with the Housing Deconstructed newsletter.
SIGN UP 