Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

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


Version #0: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 8:16:09 PM (PDT) on Friday, August 1, 2025.
The magnitude 2.5 event occurred 62 km (38 miles) WSW of Ferndale, CA.
The hypocentral depth is 27 km (17 miles).


Magnitude 2.5 - duration magnitude (Md)
Time Friday, August 1, 2025 at 8:16:09 PM (PDT)
Saturday, August 2, 2025 at 3:16:09 (UTC)
Distance from Ferndale, CA - 62 km (38 miles) WSW (237 degrees)
Rio Dell, CA - 70 km (43 miles) WSW (249 degrees)
Fortuna, CA - 71 km (44 miles) WSW (239 degrees)
Hydesville, CA - 73 km (45 miles) WSW (245 degrees)
Humboldt Hill, CA - 77 km (48 miles) SW (229 degrees)
Coordinates 40 deg. 16.4 min. N (40.273N), 124 deg. 52.5 min. W (124.874W)
Depth 27.40 km (17.00 miles)
Quality Poor
Location Quality Parameters Nst=5, Nph=5, Dmin=45.3 km, Rmss=0.08 sec, Erho=8.86 km, Erzz=9 km, Gp=318 degrees
Event ID# nc75218152
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