The epicenter for all the quakes was about one mile east of Hayward, in San Francisco’s East Bay, according to the U.S. Geological Survey

A series of small earthquakes shook the San Francisco Bay Area on Thursday, according to the United States Geological Survey. The earthquakes all struck near Hayward, Calif., just south of Oakland. A minor, 3.3-magnitude earthquake happened at 11:52 a.m. Pacific time about 1 mile east of Hayward, Calif., data from the agency shows.

A series of small earthquakes hit near a Bay Area city on Thursday, with the most recent being a magnitude 3.7, according to the US Geological Survey.