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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 11:40:29 PM (PDT) on Wednesday, July 11, 2018.
The magnitude 1.9 event occurred 13 km (8 miles) N (11 degrees) of Brooktrails, CA.
The hypocentral depth is 5 km ( 3 miles).



Magnitude 1.9 - duration magnitude (Md)
Time Wednesday, July 11, 2018 at 11:40:29 PM (PDT)
Thursday, July 12, 2018 at 6:40:29 (UTC)
Distance from Brooktrails, CA - 13 km (8 miles) N (11 degrees)
Willits, CA - 17 km (10 miles) N (360 degrees)
Laytonville, CA - 18 km (11 miles) SE (143 degrees)
Covelo, CA - 28 km (17 miles) SSW (200 degrees)
Redwood Valley, CA - 35 km (22 miles) NNW (338 degrees)
Coordinates 39 deg. 33.6 min. N (39.560N), 123 deg. 21.4 min. W (123.357W)
Depth 5.3 km (3.3 miles)
Quality Good
Location Quality Parameters Nst=20, Nph=21, Dmin=10.2 km, Rmss=0.08 sec, Erho=0.21 km, Erzz=0.75 km, Gp=83 degrees
Event ID# nc73043596
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