Magnitude 3.9 quake strikes near Potter Valley

MENDOCINO CO., 10/28/26 – A magnitude 3.9 earthquake struck Mendocino County early Wednesday morning, according to the U.S. Geological Survey.

The earthquake occurred at 5:01 a.m. at a depth of about 6.2 miles, the USGS reported.

The epicenter was about 15 miles northeast of the census-designated place of Potter Valley, or about 27.7 miles north-northeast of Ukiah, according to the agency.