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 4:06:15 AM (PDT) on Wednesday, September 17, 2025.
The magnitude 2.1 event occurred 18 km (11 miles) E (81 degrees) of Fort Bragg, CA.
The hypocentral depth is 2 km ( 1 mile).


Magnitude 2.1 - duration magnitude (Md)
Time Wednesday, September 17, 2025 at 4:06:15 AM (PDT)
Wednesday, September 17, 2025 at 11:06:15 (UTC)
Distance from Fort Bragg, CA - 18 km (11 miles) E (81 degrees)
Brooktrails, CA - 18 km (11 miles) W (279 degrees)
Willits, CA - 21 km (13 miles) WNW (288 degrees)
Laytonville, CA - 26 km (16 miles) SSW (201 degrees)
Redwood Valley, CA - 40 km (25 miles) NW (304 degrees)
Coordinates 39 deg. 28.1 min. N (39.468N), 123 deg. 35.5 min. W (123.592W)
Depth 2.08 km (1.30 miles)
Quality Good
Location Quality Parameters Nst=21, Nph=21, Dmin=9.7 km, Rmss=0.07 sec, Erho=0.35 km, Erzz=1.40999997 km, Gp=134 degrees
Event ID# nc75238737
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