Recent Earthquakes in California and Nevada


== 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 4:05:40 AM (PDT) on Saturday, August 9, 2025.
The magnitude 2.1 event occurred 9 km (6 miles) ENE (76 degrees) of Willow Creek, CA.
The hypocentral depth is 25 km (16 miles).


Magnitude 2.1 - duration magnitude (Md)
Time Saturday, August 9, 2025 at 4:05:40 AM (PDT)
Saturday, August 9, 2025 at 11:05:40 (UTC)
Distance from Willow Creek, CA - 9 km (6 miles) ENE (76 degrees)
Blue Lake, CA - 39 km (24 miles) ENE (77 degrees)
Bayside, CA - 47 km (29 miles) ENE (74 degrees)
McKinleyville, CA - 48 km (30 miles) E (88 degrees)
Arcata, CA - 48 km (30 miles) ENE (77 degrees)
Coordinates 40 deg. 57.6 min. N (40.960N), 123 deg. 31.5 min. W (123.526W)
Depth 25.39 km (15.80 miles)
Quality Excellent
Location Quality Parameters Nst=33, Nph=43, Dmin=16.0 km, Rmss=0.13 sec, Erho=0.27 km, Erzz=0.58 km, Gp=42 degrees
Event ID# nc75221077
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For more information, see https://earthquake.usgs.gov

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