This story has been updated with the change in magnitude, from 4.1 to 4.2.
THE GEYSERS, Calif. – A 4.2-magnitude earthquake was reported near The Geysers geothermal steamfield late Monday afternoon.
The quake occurred at 4:57 p.m., according to the United States Geological Survey.
The survey said the quake’s epicenter was located 1.8 miles northeast of The Geysers, on the Lake County side of the steamfield, at a depth of just over half a mile.
As of 5:45 p.m., the US Geological Survey reported receiving 48 shake reports from 20 zip codes.
Those reports came from communities around Lake County – Clearlake, Hidden Valley Lake, Kelseyville, Lakeport, Lower Lake and Middletown – as well as from Sonoma and Napa counties, the Bay Area and as far away as Canby, located in Modoc County, near the Oregon border.
Besides the 4.1-magnitude quake late Monday afternoon, the US Geological Survey said there were several smaller quakes – the largest measuring magnitude 2.2 – throughout the day.
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.