The earthquakes are all centered in the San Ramon area, with the first one – registering a 3.9-magnitude, according to the USGS – hitting just before 6:30 a.m.
More than a half-dozen earthquakes have struck that same general area over the past half hour, all registering between 4.3 to 2.5 magnitudes.
Notable quake, preliminary info: M 3.9 - 4 km SE of San Ramon, CA t.co/dB9adLJpHj
— USGS Earthquakes (@USGS_Quakes) February 2, 2026No damage has been reported at this time, but BART trains are running at reduced speeds as the agency works to complete track safety inspections.
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