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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 12:19:28 PM (PDT) on Tuesday, September 15, 2020.
The magnitude 0.9 event occurred 2 km (1 miles) NNW of The Geysers, CA.
The hypocentral depth is 0.23 km (0.1 miles).



Magnitude 0.9 - duration magnitude (Md)
Time Tuesday, September 15, 2020 at 12:19:28 PM (PDT)
Tuesday, September 15, 2020 at 19:19:28 (UTC)
Distance from The Geysers, CA - 2 km (1 miles) NNW (341 degrees)
Cobb, CA - 5 km (3 miles) SW (229 degrees)
Middletown, CA - 14 km (9 miles) WNW (290 degrees)
Hidden Valley Lake, CA - 18 km (11 miles) W (265 degrees)
Lower Lake, CA - 19 km (12 miles) SW (226 degrees)
Coordinates 38 deg. 47.7 min. N (38.794N), 122 deg. 45.9 min. W (122.764W)
Depth 0.23 km (0.1 miles)
Quality Excellent
Location Quality Parameters Nst=15, Nph=15, Dmin=0.8 km, Rmss=0.04 sec, Erho=0.22 km, Erzz=0.49 km, Gp=66 degrees
Event ID# nc73458401
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