The quake, which occurred at 11:51 a.m., was located three miles east northeast of The Geysers and 15 miles southwest of Clearlake at a depth of seven-tenths of a mile, according to the US Geological Survey.
Four shake reports were made from three zip codes – Middletown and Lower Lake, and San Francisco, 122 miles away, according to survey data.
Over an hour-and-a-half-long period, a number of very shallow – or “poorly constrained” – temblors followed that larger quake, ranging in size from 1.1 to 2.4 and happening both near The Geysers and Cobb, US Geological Survey records showed.
A 3.2-magnitude earthquake occurred just southwest of The Geysers last Friday morning, as Lake County News has reported.
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