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== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California



Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 5:18:47 AM (PDT) on Thursday, July 12, 2018.
The magnitude 1.2 event occurred 3 km (2 miles) NNW of The Geysers, CA.
The hypocentral depth is 1 km (0.3 miles).



Magnitude 1.2 - duration magnitude (Md)
Time Thursday, July 12, 2018 at 5:18:47 AM (PDT)
Thursday, July 12, 2018 at 12:18:47 (UTC)
Distance from The Geysers, CA - 3 km (2 miles) NNW (335 degrees)
Cobb, CA - 5 km (3 miles) WSW (242 degrees)
Middletown, CA - 15 km (9 miles) WNW (292 degrees)
Lower Lake, CA - 18 km (11 miles) SW (229 degrees)
Hidden Valley Lake, CA - 18 km (11 miles) W (268 degrees)
Coordinates 38 deg. 48.1 min. N (38.802N), 122 deg. 46.3 min. W (122.771W)
Depth 0.55 km (0.3 miles)
Quality Excellent
Location Quality Parameters Nst=29, Nph=35, Dmin=1.5 km, Rmss=0.06 sec, Erho=0.11 km, Erzz=0.22 km, Gp=65 degrees
Event ID# nc73043806
Additional Information map || waveforms
  

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