Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

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


Version #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A minor earthquake occurred at 2:44:24 PM (PDT) on Monday, September 7, 2026.
The magnitude 3.7 event occurred 36 km (22 miles) E (87 degrees) of Hydesville, CA.
The hypocentral depth is 24 km (15 miles).


Magnitude 3.7 - moment magnitude (Mw)
Time Monday, September 7, 2026 at 2:44:24 PM (PDT)
Monday, September 7, 2026 at 21:44:24 (UTC)
Distance from Hydesville, CA - 36 km (22 miles) E (87 degrees)
Rio Dell, CA - 37 km (23 miles) E (79 degrees)
Fortuna, CA - 41 km (25 miles) E (95 degrees)
Willow Creek, CA - 42 km (26 miles) S (185 degrees)
Hayfork, CA - 42 km (26 miles) W (271 degrees)
Coordinates 40 deg. 33.8 min. N (40.562N), 123 deg. 40.6 min. W (123.677W)
Depth 24.25 km (15.10 miles)
Quality Excellent
Location Quality Parameters Nst=66, Nph=80, Dmin=12.8 km, Rmss=0.14 sec, Erho=0.2 km, Erzz=0.59 km, Gp=20 degrees
Event ID# nc75431397
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