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== PRELIMINARY EARTHQUAKE REPORT ==

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



Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 6:56:03 PM (PDT) on Monday, July 27, 2020.
The magnitude 1.9 event occurred 3 km (2 miles) SE of The Geysers, CA.
The hypocentral depth is 2 km ( 1 mile).



Magnitude 1.9 - duration magnitude (Md)
Time Monday, July 27, 2020 at 6:56:03 PM (PDT)
Tuesday, July 28, 2020 at 1:56:03 (UTC)
Distance from The Geysers, CA - 3 km (2 miles) SE (128 degrees)
Cobb, CA - 7 km (4 miles) S (183 degrees)
Middletown, CA - 10 km (6 miles) W (275 degrees)
Hidden Valley Lake, CA - 16 km (10 miles) WSW (250 degrees)
Lower Lake, CA - 20 km (12 miles) SSW (211 degrees)
Coordinates 38 deg. 45.6 min. N (38.760N), 122 deg. 43.6 min. W (122.727W)
Depth 1.63 km (1.0 miles)
Quality Excellent
Location Quality Parameters Nst=54, Nph=61, Dmin=0.3 km, Rmss=0.06 sec, Erho=0.13 km, Erzz=0.18 km, Gp=66 degrees
Event ID# nc73434591
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