Magnitude 3.9 Quake Rocks East Bay

Editor's Note: The USGS initially reported the earthquake was a magnitude-4.2, but has since downgraded the earthquake to 3.9.

An earthquake with a preliminary magnitude of 3.9 rattled the Bay Area on Thursday afternoon.

According to the U.S. Geological Survey, the quake struck at 2:41 p.m. about 2 miles southeast of Berkeley and 5 miles northwest of Oakland.

The temblor had a depth of about 6.1 miles, according to the USGS.

All BART trains have been halted or slowed due to the earthquake, a BART employee said.

Trains systemwide are stopped or are traveling slowly as train operators conduct track inspections, the employee said.

BART did not have an estimate as of 3 p.m. for when the trains will resume normal operations.

For more news about Pacifica and surrounding areas, including the San Mateo County Coastside, follow us on Twitter and "like" us on Facebook.