A magnitude 4.0 earthquake was reported 4:18 a.m. Friday 26 miles from Ukiah, Calif., according to the U.S. Geological Survey.
The earthquake occurred 41 miles from Clearlake, Calif.; 59 miles from Red Bluff, Calif.; 60 miles from Healdsburg, and 60 miles from Chico.
In the past 10 days, there have been four earthquakes of magnitude 3.0 or greater centered nearby.
An average of 25 earthquakes with magnitudes of 4.0 to 5.0 occur each year in California and Nevada, according to a recent three-year data sample.
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