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== PRELIMINARY EARTHQUAKE REPORT ==

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



Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 5:15:00 PM (PDT) on Wednesday, October 10, 2018.
The magnitude 2.5 event occurred 38 km (24 miles) SSW of Ferndale, CA.
The hypocentral depth is 20 km (13 miles).



Magnitude 2.5 - duration magnitude (Md)
Time Wednesday, October 10, 2018 at 5:15:00 PM (PDT)
Thursday, October 11, 2018 at 0:15:00 (UTC)
Distance from Ferndale, CA - 38 km (24 miles) SSW (211 degrees)
Rio Dell, CA - 41 km (25 miles) SW (234 degrees)
Fortuna, CA - 45 km (28 miles) SW (219 degrees)
Hydesville, CA - 45 km (28 miles) SW (229 degrees)
Humboldt Hill, CA - 56 km (35 miles) SSW (208 degrees)
Coordinates 40 deg. 16.9 min. N (40.282N), 124 deg. 29.9 min. W (124.498W)
Depth 20.48 km (12.7 miles)
Quality Fair
Location Quality Parameters Nst=23, Nph=34, Dmin=18.5 km, Rmss=0.15 sec, Erho=0.62 km, Erzz=0.33 km, Gp=251 degrees
Event ID# nc73096021
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