LAKE COUNTY – Northern California was shaken up by a few good-sized earthquakes Friday, both here in Lake County and in the Bay area.

A 3.8 earthquake hit The Geysers at 10:50 a.m. at a depth of half a mile, according to the US Geological Survey. It was centered one mile north of The Geysers and five miles west southwest of Cobb.

A few hours earlier, the Bay Area was shaken by a 4.2 magnitude quake centered two miles east northeast of Oakland at a depth of 3.6 miles, which the US Geological Survey recorded at 4:42 a.m.

There were no reports of injuries but some buildings were damaged when their windows broke during the shaker.

The US Geological Survey reported that the quake was felt in such wide-ranging areas as Eureka, Santa Rosa, San Luis Obispo and Carson City, Nev.

The Oakland quake was centered along the Bay Area's Hayward fault, and was not related to The Geysers quake. U.S. Geological Survey seismologist David Oppenheimer previously told Lake County News that the quakes at The Geysers are attributable to the geothermal industry in the area.

The Friday morning quake at The Geysers is the third earthquake of magnitude 3.0 or above that has occurred in Lake County this month, with two taking place this week according to U.S. Geological Survey records.

A 3.2 earthquake hit The Geysers area Wednesday afternoon, centered three miles north of The Geysers.

On July 11, a 3.0 earthquake centered one mile west northwest of The Geysers occurred in the early morning.

E-mail Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it..

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