San Francisco was in for a rude awakening this morning, as a magnitude-4.0 quake hit the area just after 5:30 a.m. Though the quake was centered near El Cerrito, people reported feeling the shakes throughout San Francisco and as far as Palo Alto. There have been no reports of damage or injuries, though some commuter trains did have to stop so tracks could be inspected. The Bay Area has seen two earthquakes measuring above a 3.0 in the past 10 days.
TEMBLOR George Rose / Getty Images