The quakes began after 1 a.m. Sunday morning, culminating in a 3.0-magnitude quake that occurred at 4:36 p.m. Sunday, according to the US Geological Survey.
Recorded at a depth of eight-tenths of a mile, the 3.0 quake was centered one mile from The Geysers, four miles west southwest of Cobb and six miles west northwest of Anderson Springs.
Over the following hour, a series of smaller quakes – some as large as 2.4 in magnitude – followed in The Geysers and Anderson Springs areas.
In all, 25 quakes hit Anderson Springs, Cobb and The Geysers on Sunday, the US Geological Service reported.
Cobb resident Roger Kinney, who regularly updates Lake County News on happenings in his area, reported that the earthquake activity had seemed to spike about 5:30 p.m. Sunday.
Kinney said the earthquakes usually calm down a bit in winter, but they've continued coming this year.
The quakes continued into Monday. Kinney said he felt a quake shortly after 10 a.m. that he described as “more of a rolling motion than the usual, BANG-SHAKE type of quakes.”
A 2.9-magnitude quake that occurred shortly before 6 a.m. woke up Anderson Springs resident Joan Clay.
Clay said she immediately called Calpine's hotline to report the quake.
She said the severity of the quakes depends on where a person lives in Anderson Springs.
Clay added that the quakes seem to occur when it's raining.
“We have them all the time,” she said.
The last time an earthquake measuring 3.0 in magnitude or above hit that area was on Dec. 14, when a 3.1 was recorded near The Geysers.
E-mail Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it..
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