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

A micro earthquake occurred at 9:56:34 PM (PST) on Saturday, December 20, 2025.
The magnitude 0.9 event occurred 5 km (3 miles) SW of Wrightwood, CA.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 0.9 - local magnitude (Ml)
Time Saturday, December 20, 2025 at 9:56:34 PM (PST)
Sunday, December 21, 2025 at 5:56:34 (UTC)
Distance from Wrightwood, CA - 5 km (3 miles) SW (214 degrees)
Pinon Hills, CA - 13 km (8 miles) S (188 degrees)
Phelan, CA - 14 km (9 miles) SW (216 degrees)
Lytle Creek, CA - 17 km (10 miles) WNW (295 degrees)
Llano, CA - 22 km (14 miles) SSE (149 degrees)
Coordinates 34 deg. 19.3 min. N (34.322N), 117 deg. 39.9 min. W (117.665W)
Depth 7.20 km (4.50 miles)
Quality Fair
Location Quality Parameters Nst=19, Nph=33, Dmin=6.8 km, Rmss=0.15 sec, Erho=0.29 km, Erzz=0.48 km, Gp=140 degrees
Event ID# ci41144351
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