Residents in the North Bay were shaken up overnight by a magnitude 4.5 earthquake just north of Santa Rosa.
The quake struck at 2:09 a.m. just outside of Cobb, according to the USGS. The epicenter was 13 miles southwest of Clearlake and 14 miles northeast of Healdsburg.
A small 2.9 aftershock was felt a few minutes later at 2:12 a.m.
There are no reports of any damage or injuries.