A preliminary 2.5 magnitude earthquake struck in the Concord-Walnut Creek area Wednesday morning, according to the United States Geological Survey.
The quake, at about 6:45 a.m., was centered about 3 miles southwest of Concord, the USGS said.
No other information was immediately available. Updates to come.
Get a weekly recap of the latest San Francisco Bay Area housing news. Sign up for NBC Bay Areaβs Housing Deconstructed newsletter.