Wednesday, 01 February 2023

3.1 earthquake occurs near Lake Pillsbury

LAKE PILLSBURY – A 3.1 earthquake shook the Lake Pillsbury area Sunday morning.

The US Geological Survey reported the quake took place at 7:27 a.m.

The temblor's epicenter was 9 miles west north west of Lake Pillsbury at a depth of 2 miles.

A second quake occurred at 7:53 a.m., its epicenter in the same location as the first, with its depth at 2.5 miles, the US Geological Survey reported.

There has appeared to be an increase in seismic activity in the Lake Pillsbury area in recent weeks, according to US Geological Survey records.

On April 11, two microearthquakes were recorded at the same epicenter as Sunday's quakes. The first, measuring 2.4, occurred at 6:20 p.m. at a depth of 2.1 miles. The second, smaller quake, measuring 1.7, took place at 7:28 p.m. at a depth of 1.6 miles. A small quake registering 1.6 was recorded in the same area near Pillsbury on April 6.

Much of the county's seismic activity remains centered around The Geysers, Anderson Springs and Cobb.

In the past week, 30 small earthquakes have been recorded in those areas, the largest – a 2.7 quake four miles west north west of The Geysers – occurring at 5:23 p.m. Sunday, the US Geological Survey reported.

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


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