A preliminary 3.2 magnitude earthquake struck near Santa Rosa on Thursday, according to the United States Geological Survey.
The quake, which hit at 7:53 a.m., was centered about 10 miles northeast of Santa Rosa and just 4 miles southwest of St. Helena, near the Napa-Sonoma County border, the USGS said.
It had a depth of about 5.6 miles.
No other information was immediately available. Updates to come.