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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 5:26:49 PM (PDT) on Monday, September 9, 2019.
The magnitude 0.6 event occurred 2 km (1 miles) SSE of The Geysers, CA.
The hypocentral depth is 4 km ( 3 miles).



Magnitude 0.6 - duration magnitude (Md)
Time Monday, September 9, 2019 at 5:26:49 PM (PDT)
Tuesday, September 10, 2019 at 0:26:49 (UTC)
Distance from The Geysers, CA - 2 km (1 miles) SSE (163 degrees)
Cobb, CA - 7 km (5 miles) SSW (197 degrees)
Middletown, CA - 12 km (7 miles) W (273 degrees)
Hidden Valley Lake, CA - 17 km (11 miles) WSW (252 degrees)
Healdsburg, CA - 19 km (12 miles) NNE (32 degrees)
Coordinates 38 deg. 45.5 min. N (38.758N), 122 deg. 44.9 min. W (122.749W)
Depth 4.38 km (2.7 miles)
Quality Good
Location Quality Parameters Nst=6, Nph=6, Dmin=2.0 km, Rmss=0.04 sec, Erho=0.78 km, Erzz=1.15 km, Gp=148 degrees
Event ID# nc73268305
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