A magnitude 4.3 earthquake struck about nine kilometers east-southeast of Willits in Mendocino County on Tuesday, according to preliminary data by USGS.
The quake occurred at 1:10 p.m. PST at a depth of about eight miles.
The earthquake was detected by 47 stations, with 46 seismic phases reported.
The data have not been reviewed by a scientist and remains subject to revision.
The National Weather Service reports that there is no tsunami warning, advisory, watch, or threat.
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