The US Geological Survey said the quake occurred at 12:13 p.m.
It was centered five miles north northeast of Lake Pillsbury and 22 miles north of Upper Lake, at a depth of 8.8 miles, the survey reported.
By late Thursday, the US Geological Survey received eight shake reports from five zip codes – Willits, San Jose, Milpitas, Berkeley and San Bruno.
A 3.1-magnitude quake occurred four miles north northeast of Lake Pillsbury on May 2, as Lake County News has reported.
E-mail Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it. . Follow Lake County News on Twitter at http://twitter.com/LakeCoNews , on Facebook at http://www.facebook.com/pages/Lake-County-News/143156775604?ref=mf and on YouTube at http://www.youtube.com/user/LakeCoNews .