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The quake struck at 2:52 p.m. in roughly the same area that has experienced several 3.0-magnitude or larger seismic events in recent weeks, according to the USGS.

This afternoon's earthquake was centered 2 miles north of Piedmont and 4 miles southeast of Berkeley. It had a depth of 4 miles, according to the USGS.

BART trains were experiencing minor delays of less than 10 minutes across the system because of the quake, according to a dispatcher.

After an earthquake, the transit system holds its trains momentarily before allowing them to proceed to the next station in manual mode, the dispatch said.