Update 8:20 p.m. Power has been restored in Pacifica. The Examiner reports some 10,000 people were affected by the outage that occurred after a 3.7 quake struck two miles southeast of that city. The temblor was felt all over the Bay Area.
USGS has the details of the 3.4 earthquake that shook the Peninsula.
Update: 10-minute BART delay to the quake.
Update 3:38 p.m. Downed power lines and a power outage in Pacifica.