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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 8:29:19 PM (PDT) on Thursday, October 11, 2018.
The magnitude 0.5 event occurred 1 km (1 miles) SE of The Geysers, CA.
The hypocentral depth is 2 km ( 2 miles).



Magnitude 0.5 - duration magnitude (Md)
Time Thursday, October 11, 2018 at 8:29:19 PM (PDT)
Friday, October 12, 2018 at 3:29:19 (UTC)
Distance from The Geysers, CA - 1 km (1 miles) SE (130 degrees)
Cobb, CA - 6 km (4 miles) SSW (200 degrees)
Middletown, CA - 12 km (7 miles) W (280 degrees)
Hidden Valley Lake, CA - 17 km (10 miles) WSW (256 degrees)
Lower Lake, CA - 19 km (12 miles) SW (217 degrees)
Coordinates 38 deg. 46.3 min. N (38.771N), 122 deg. 44.8 min. W (122.747W)
Depth 2.34 km (1.5 miles)
Quality Excellent
Location Quality Parameters Nst=10, Nph=10, Dmin=1.6 km, Rmss=0.03 sec, Erho=0.68 km, Erzz=1.07 km, Gp=80 degrees
Event ID# nc73096236
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