LAKE COUNTY, Calif. – Two moderately sized earthquakes occurred near Cobb on Monday evening.
A 3.9-magnitude quake occurred at 6:44 p.m. followed by a 3.5-magnitude quake at 6:45 p.m., according to the US Geological Survey.
The first quake was centered 4.1 miles west northwest of Cobb, just inside the Sonoma County line at a depth of six-tenths of a mile, the survey reported.
As of 1 a.m. Tuesday, 77 shake reports from around Lake, Napa and Sonoma counties had been submitted to the US Geological Survey for the 3.7-magnitude earthquake.
It was rated as having “moderate” shaking in Middletown, based on the US Geological Survey scale, with the Santa Rosa area responses rating it as “strong.”
The 3.5-magnitude quake occurred 3.2 miles southwest of Cobb, just under the earth’s surface, the survey said. It also was centered in Sonoma County.
Fifteen shake reports had been submitted to the US Geological Survey by early Tuesday.
Shake reports came from Lake, Mendocino and Sonoma counties and rated the second temblor as being weaker than the first.
Email Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it. . Follow her on Twitter, @ERLarson, or Lake County News, @LakeCoNews.
Monday evening earthquakes reported near Cobb
- Elizabeth Larson
- Posted On