COBB, Calif. – This weekend the Cobb area was hit by several earthquakes in the 3-magnitude range.
The US Geological Survey said the quakes occurred on Saturday and Sunday afternoons.
The first quake, measuring 3.4 on the Richter scale, was at 2:20 p.m. on Saturday, the survey said.
It was centered two miles west northwest of Cobb and 10 miles southwest of Clearlake at a depth of half a mile, the survey reported.
The survey received 11 shake reports from Kelseyville, Lakeport, Lower Lake and Middletown, and from Healdsburg.
On Sunday, there were two back-to-back quakes, both measuring 3.1 in magnitude, according to US Geological Survey records.
The epicenter of the first, which occurred at 12:30 p.m., was two miles west northwest of Cobb and 11 miles southwest of Clearlake, at a depth of 0.6 of a mile, the survey reported.
The second quake, which survey records said occurred six seconds later, was centered in almost the exact same place, but at a depth of 0.4 of a mile.
One shake report from Ukiah was submitted to the US Geological Survey for the first quake, and seven responses from Kelseyville, Santa Rosa and Mill Valley for the second, according to its online records.
In addition to the larger quakes, the US Geological Survey reported that the Cobb and The Geysers areas also experienced four quakes measuring between 2.5 and 2.9 magnitude since Wednesday.
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Cobb area hit by 3-plus magnitude earthquakes over the weekend
- Elizabeth Larson
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