The quake occurred at 1:47 a.m. Saturday five miles north northeast of Ukiah and 35 miles northwest of Clearlake at a depth of 4.3 miles, according to the US Geological Survey.
The survey received 23 shake reports from five zip codes – Ukiah, Redwood Valley, Potter Valley, Willits, Potter Valley and Sylmar.
At 2:04 a.m. a smaller quake, measuring 1.8 in magnitude, was recorded at a depth of 4.8 miles seven miles north northeast of Ukiah, seven miles north of Talmage and 14 miles west northwest of Upper Lake, the US Geological Survey reported.
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