Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

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


Version #909006: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 10:08:48 PM (PST) on Sunday, December 28, 2025.
The magnitude 2.3 event occurred 15 km (9 miles) NNW of Susanville, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 2.3 - local magnitude (Ml)
Time Sunday, December 28, 2025 at 10:08:48 PM (PST)
Monday, December 29, 2025 at 6:08:48 (UTC)
Distance from Susanville, CA - 15 km (9 miles) NNW (344 degrees)
Johnstonville, CA - 20 km (12 miles) NNW (333 degrees)
Janesville, CA - 31 km (19 miles) NNW (333 degrees)
Greenville, CA - 50 km (31 miles) NNE (26 degrees)
Chester, CA - 53 km (33 miles) ENE (60 degrees)
Coordinates 40 deg. 32.6 min. N (40.543N), 120 deg. 41.5 min. W (120.692W)
Depth 5.81 km (3.60 miles)
Quality Fair
Location Quality Parameters Nst=5, Nph=8, Dmin=33.2 km, Rmss=0.11 sec, Erho=0.52 km, Erzz=1.17999995 km, Gp=218 degrees
Event ID# nc75288016
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