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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 5:57:33 AM (PDT) on Thursday, July 30, 2020.
The magnitude 0.4 event occurred 5 km (3 miles) NW of The Geysers, CA.
The hypocentral depth is 4 km ( 2 miles).



Magnitude 0.4 - duration magnitude (Md)
Time Thursday, July 30, 2020 at 5:57:33 AM (PDT)
Thursday, July 30, 2020 at 12:57:33 (UTC)
Distance from The Geysers, CA - 5 km (3 miles) NW (323 degrees)
Cobb, CA - 6 km (4 miles) W (263 degrees)
Middletown, CA - 17 km (11 miles) WNW (294 degrees)
Cloverdale, CA - 19 km (12 miles) E (87 degrees)
Kelseyville, CA - 19 km (12 miles) SSE (167 degrees)
Coordinates 38 deg. 48.9 min. N (38.815N), 122 deg. 47.6 min. W (122.793W)
Depth 3.69 km (2.3 miles)
Quality Excellent
Location Quality Parameters Nst=13, Nph=13, Dmin=0.8 km, Rmss=0.01 sec, Erho=0.37 km, Erzz=0.77 km, Gp=87 degrees
Event ID# nc73435851
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