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 4:48:27 PM (PST) on Sunday, December 28, 2025.
The magnitude 2.3 event occurred 13 km (8 miles) N of Susanville, CA.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 2.3 - duration magnitude (Md)
Time Sunday, December 28, 2025 at 4:48:27 PM (PST)
Monday, December 29, 2025 at 0:48:27 (UTC)
Distance from Susanville, CA - 13 km (8 miles) N (360 degrees)
Johnstonville, CA - 17 km (11 miles) NNW (343 degrees)
Janesville, CA - 28 km (18 miles) NNW (339 degrees)
Greenville, CA - 51 km (32 miles) NNE (30 degrees)
Chester, CA - 56 km (35 miles) ENE (63 degrees)
Coordinates 40 deg. 32.0 min. N (40.534N), 120 deg. 38.8 min. W (120.646W)
Depth 5.03 km (3.10 miles)
Quality Fair
Location Quality Parameters Nst=7, Nph=6, Dmin=12.3 km, Rmss=0.02 sec, Erho=0.87 km, Erzz=1.13 km, Gp=216 degrees
Event ID# nc75287866
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