(KRON) -- A preliminary 2.6-magnitude earthquake rattled near San Ramon Saturday morning, according to the United States Geological Survey. USGS recorded the quake at around 8:10 a.m. It was centered south of San Ramon. Pineapple express to bring wet Christmas to Bay Area Photo courtesy of USGS. The depth of the earthquake was 9.1 kilometers, or approximately 5.65 miles, according to USGS. The quake is the latest a series of earthquakes that struck in the same area on Friday evening, including a 4.0 magnitude quake. This is a developing story. Stick with KRON4 for the latest. ...read more read less