LAKE COUNTY, Calif. – A number of moderate-sized earthquakes have shaken parts of Lake and Mendocino counties over the last several days.
The most recent was a 3.5-magnitude quake recorded just beneath the earth's surface and centered 11 miles west of Ukiah at 1:42 p.m. Monday, according to the US Geological Survey.
The US Geological Survey received 68 shake reports from 15 zip codes regarding the quake, with most of the reports coming from Ukiah and other areas of Mendocino County, but some coming from Brookings, Ore., 346 miles away, Los Angeles, 719 miles from the quake, and Palm Desert, 871 miles distant.
Other recent quakes of note included a 3.1-magnitude temblor reported at 8:29 a.m. Thursday, March 17, one mile northeast of The Geysers, four miles west southwest of Cobb and six miles west northwest of Anderson Springs, the survey reported.
That quake, which occurred at a depth of 2.5 miles, resulted in 14 responses from 10 zip codes, including Kelseyville, Lakeport, Middletown and Hidden Valley Lake, as well as Cottonwood, 170 miles north.
On Sunday, March 20, at 1:17 a.m. a 3.5-magnitude earthquake, monitored at four-tenths of a mile underground, was reported two miles east southeast of The Geysers, four miles southwest of Cobb and four miles west of Anderson Springs, the US Geological Survey reported.
For that quake, 17 responses in 13 zip codes were submitted to the survey. No county residents made reports, but residents in San Francisco, San Mateo, Chico, Sacramento, Stockton and San Jose did.
Also on Sunday there was a 3.2-magnitude quake reported at 3:08 p.m., which the survey said occurred at a depth of seven-tenths of a mile. Its epicenter was located two miles west of Cobb, four miles northeast of The Geysers and five miles northwest of Anderson Springs.
Six shake reports from six area codes were submitted to the US Geological Survey. Areas that were the source of reports included San Francisco, Hayward, Pittsburg, Oakland, Petaluma and Modesto.
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