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 preliminary magnitude 3.7 earthquake rattled the Bay Area on Thursday afternoon after a series of smaller quakes hours before in the same area, according to the U.S. Geological Survey. The latest shake happened at 1:59 p.m., with an epicenter about 1.2 miles east of Hayward and a depth of about 4.34 miles.

Officials with the U.S. Geological Survey confirmed four earthquakes with magnitudes ranging from 2.7 to 3.7 hit in the East Bay over the course of Thursday.