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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 11:36:08 PM (PDT) on Tuesday, May 15, 2018.
The magnitude 2.3 event occurred 27 km (17 miles) SW of Ferndale, CA.
The hypocentral depth is 16 km (10 miles).



Magnitude 2.3 - duration magnitude (Md)
Time Tuesday, May 15, 2018 at 11:36:08 PM (PDT)
Wednesday, May 16, 2018 at 6:36:08 (UTC)
Distance from Ferndale, CA - 27 km (17 miles) SW (216 degrees)
Rio Dell, CA - 32 km (20 miles) WSW (245 degrees)
Fortuna, CA - 35 km (22 miles) SW (226 degrees)
Hydesville, CA - 36 km (22 miles) WSW (238 degrees)
Humboldt Hill, CA - 45 km (28 miles) SSW (210 degrees)
Coordinates 40 deg. 22.7 min. N (40.378N), 124 deg. 27.2 min. W (124.454W)
Depth 15.74 km (9.8 miles)
Quality Fair
Location Quality Parameters Nst=15, Nph=23, Dmin=14.7 km, Rmss=0.1 sec, Erho=0.6 km, Erzz=0.28 km, Gp=272 degrees
Event ID# nc73016645
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