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 2:27:51 PM (PDT) on Sunday, July 20, 2025.
The magnitude 1.7 event occurred 32 km (20 miles) W of Hayfork, CA.
The hypocentral depth is 13 km ( 8 miles).


Magnitude 1.7 - duration magnitude (Md)
Time Sunday, July 20, 2025 at 2:27:51 PM (PDT)
Sunday, July 20, 2025 at 21:27:51 (UTC)
Distance from Hayfork, CA - 32 km (20 miles) W (267 degrees)
Hydesville, CA - 45 km (28 miles) E (91 degrees)
Willow Creek, CA - 45 km (28 miles) S (173 degrees)
Rio Dell, CA - 46 km (29 miles) E (84 degrees)
Fortuna, CA - 50 km (31 miles) E (97 degrees)
Coordinates 40 deg. 32.4 min. N (40.540N), 123 deg. 33.9 min. W (123.565W)
Depth 12.73 km (7.90 miles)
Quality Fair
Location Quality Parameters Nst=5, Nph=5, Dmin=38.4 km, Rmss=0.03 sec, Erho=1.27 km, Erzz=2.29999995 km, Gp=178 degrees
Event ID# nc75212677
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