SONOMA COUNTY, Calif. (FOX26) – Residents in the area near Santa Rosa got a little rattled on Friday after four different earthquakes hit. The ShakeAlert system was activated to a 3.1 magnitude quake northwest of The Geysers at 8:42 a.m., followed by a 4.2 at 1:28 p.m., and then a 2.5 at 1:32 p.m., and finally a 3.0 at 2:23 p.m.