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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 5:44:23 PM (PDT) on Thursday, May 21, 2020.
The magnitude 0.9 event occurred 2 km (1 miles) SW of Cobb, CA.
The hypocentral depth is 2 km ( 1 mile).



Magnitude 0.9 - duration magnitude (Md)
Time Thursday, May 21, 2020 at 5:44:23 PM (PDT)
Friday, May 22, 2020 at 0:44:23 (UTC)
Distance from Cobb, CA - 2 km (1 miles) SW (223 degrees)
The Geysers, CA - 4 km (2 miles) NNE (23 degrees)
Middletown, CA - 12 km (8 miles) WNW (300 degrees)
Lower Lake, CA - 16 km (10 miles) SW (225 degrees)
Hidden Valley Lake, CA - 16 km (10 miles) W (270 degrees)
Coordinates 38 deg. 48.5 min. N (38.808N), 122 deg. 44.4 min. W (122.739W)
Depth 2.1 km (1.3 miles)
Quality Excellent
Location Quality Parameters Nst=22, Nph=22, Dmin=2.0 km, Rmss=0.04 sec, Erho=0.23 km, Erzz=0.52 km, Gp=60 degrees
Event ID# nc73392661
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