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== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California



Version #0: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 3:04:20 PM (PDT) on Friday, July 31, 2020.
The magnitude 1.1 event occurred 4 km (2 miles) W of Cobb, CA.
The hypocentral depth is 2 km ( 1 mile).



Magnitude 1.1 - duration magnitude (Md)
Time Friday, July 31, 2020 at 3:04:20 PM (PDT)
Friday, July 31, 2020 at 22:04:20 (UTC)
Distance from Cobb, CA - 4 km (2 miles) W (263 degrees)
The Geysers, CA - 5 km (3 miles) N (350 degrees)
Middletown, CA - 15 km (9 miles) WNW (299 degrees)
Lower Lake, CA - 17 km (11 miles) SW (233 degrees)
Hidden Valley Lake, CA - 18 km (11 miles) W (274 degrees)
Coordinates 38 deg. 49.1 min. N (38.818N), 122 deg. 45.9 min. W (122.766W)
Depth 1.7 km (1.1 miles)
Quality Excellent
Location Quality Parameters Nst=18, Nph=18, Dmin=1.4 km, Rmss=0.04 sec, Erho=0.24 km, Erzz=0.4 km, Gp=57 degrees
Event ID# nc73436651
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