
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.
No other information was immediately available. Updates to come.
Are you prepared for the next big one?
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