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 12:52:21 PM (PDT) on Thursday, September 4, 2025.
The magnitude 2.8 event occurred 16 km (10 miles) WNW of Rancho Tehama Reserve, CA.
The hypocentral depth is 15 km ( 9 miles).


Magnitude 2.8 - duration magnitude (Md)
Time Thursday, September 4, 2025 at 12:52:21 PM (PDT)
Thursday, September 4, 2025 at 19:52:21 (UTC)
Distance from Rancho Tehama Reserve, CA - 16 km (10 miles) WNW (292 degrees)
Red Bluff, CA - 32 km (20 miles) WSW (248 degrees)
Gerber, CA - 36 km (23 miles) W (273 degrees)
Corning, CA - 38 km (23 miles) WNW (295 degrees)
Los Molinos, CA - 41 km (26 miles) W (278 degrees)
Coordinates 40 deg. 4.2 min. N (40.070N), 122 deg. 34.7 min. W (122.579W)
Depth 14.78 km (9.20 miles)
Quality Good
Location Quality Parameters Nst=16, Nph=16, Dmin=8.4 km, Rmss=0.39 sec, Erho=0.93 km, Erzz=1.28999996 km, Gp=65 degrees
Event ID# nc75233157
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