More than a dozen small quakes struck west of Cobb in Lake County on Sunday afternoon, according to the U.S. Geological Survey. A total of 31 small quakes were recorded in the area over the past 24 hours.
The largest magnitude quake measured 2.9 and struck at 1:56 p.m. near the border of Lake and Sonoma counties. The other earthquakes were magnitude 2.0 or less, according to the USGS.
No injuries were reported.