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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 9:43:54 PM (PDT) on Thursday, September 13, 2018.
The magnitude 1.2 event occurred 6 km (4 miles) W of Cobb, CA.
The hypocentral depth is 2 km ( 1 mile).



Magnitude 1.2 - duration magnitude (Md)
Time Thursday, September 13, 2018 at 9:43:54 PM (PDT)
Friday, September 14, 2018 at 4:43:54 (UTC)
Distance from Cobb, CA - 6 km (4 miles) W (278 degrees)
The Geysers, CA - 7 km (4 miles) NNW (333 degrees)
Kelseyville, CA - 17 km (11 miles) SSE (166 degrees)
Middletown, CA - 17 km (11 miles) WNW (300 degrees)
Lower Lake, CA - 18 km (11 miles) WSW (240 degrees)
Coordinates 38 deg. 49.8 min. N (38.830N), 122 deg. 47.4 min. W (122.791W)
Depth 1.97 km (1.2 miles)
Quality Excellent
Location Quality Parameters Nst=34, Nph=39, Dmin=1.0 km, Rmss=0.04 sec, Erho=0.16 km, Erzz=0.23 km, Gp=40 degrees
Event ID# nc73084235
Additional Information map || waveforms
  

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