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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 0:08:56 AM (PDT) on Tuesday, September 10, 2019.
The magnitude 0.5 event occurred 4 km (3 miles) WNW of The Geysers, CA.
The hypocentral depth is 4 km ( 2 miles).



Magnitude 0.5 - duration magnitude (Md)
Time Tuesday, September 10, 2019 at 0:08:56 AM (PDT)
Tuesday, September 10, 2019 at 7:08:56 (UTC)
Distance from The Geysers, CA - 4 km (3 miles) WNW (292 degrees)
Cobb, CA - 8 km (5 miles) WSW (244 degrees)
Middletown, CA - 17 km (10 miles) WNW (285 degrees)
Cloverdale, CA - 19 km (12 miles) E (95 degrees)
Healdsburg, CA - 21 km (13 miles) NNE (16 degrees)
Coordinates 38 deg. 47.5 min. N (38.792N), 122 deg. 48.1 min. W (122.802W)
Depth 3.69 km (2.3 miles)
Quality Excellent
Location Quality Parameters Nst=12, Nph=12, Dmin=0.4 km, Rmss=0.03 sec, Erho=0.41 km, Erzz=0.96 km, Gp=68 degrees
Event ID# nc73268445
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