4.0-Magnitude Quake Hits Sonoma County
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A magnitude 4.0 earthquake centered northeast of Healdsburg in Sonoma County jolted Northern California on Wednesday, the U.S. Geological Survey reported. There were no injuries or damage.
The quake occurred at 1:21 p.m. in an area 60 miles north of San Francisco that is a frequent site of seismic activity.
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