Magnitude 3.80 quake shakes Bay Area
A magnitude 3.8 earthquake shook San Mateo County south of San Francisco at 2:57 p.m. Monday, the U.S. Geological Survey said.
The epicenter was two miles southeast of the hamlet of Pacifica, which is on the coast between San Francisco and Half Moon Bay and two miles southwest of San Bruno.
The quake, which was centered 12 miles south of San Francisco City Hall, occurred near the San Andreas fault about 8.5 miles underneath the surface.
-- Rong-Gong Lin II