Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California


Version #3: 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 11:59:36 AM (PST) on Thursday, December 11, 2025.
The magnitude 1.8 event occurred 6 km (4 miles) E (81 degrees) of Calimesa, CA.
The hypocentral depth is 16 km (10 miles).


Magnitude 1.8 - local magnitude (Ml)
Time Thursday, December 11, 2025 at 11:59:36 AM (PST)
Thursday, December 11, 2025 at 19:59:36 (UTC)
Distance from Calimesa, CA - 6 km (4 miles) E (81 degrees)
Yucaipa, CA - 6 km (4 miles) SE (129 degrees)
Beaumont, CA - 8 km (5 miles) N (352 degrees)
Banning, CA - 13 km (8 miles) NW (307 degrees)
Mentone, CA - 16 km (10 miles) ESE (121 degrees)
Coordinates 33 deg. 59.8 min. N (33.997N), 116 deg. 59.3 min. W (116.989W)
Depth 16.42 km (10.20 miles)
Quality Good
Location Quality Parameters Nst=76, Nph=135, Dmin=8.4 km, Rmss=0.2 sec, Erho=0.15 km, Erzz=0.46 km, Gp=26 degrees
Event ID# ci41349752
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