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 8:44:42 AM (PST) on Tuesday, December 9, 2025.
The magnitude 0.4 event occurred 14 km (9 miles) SE of Anza, CA.
The hypocentral depth is 11 km ( 7 miles).
| Magnitude | 0.4 - local magnitude (Ml) |
| Time | Tuesday, December 9, 2025 at 8:44:42 AM (PST) Tuesday, December 9, 2025 at 16:44:42 (UTC) |
| Distance from |
Anza, CA - 14 km (9 miles) SE (141 degrees) Warner Springs, CA - 20 km (12 miles) NNE (16 degrees) Aguanga, CA - 27 km (17 miles) E (87 degrees) Palomar Observatory, CA - 29 km (18 miles) ENE (68 degrees) Lake Henshaw, CA - 29 km (18 miles) NE (36 degrees) |
| Coordinates | 33 deg. 27.3 min. N (33.455N), 116 deg. 34.5 min. W (116.576W) |
| Depth | 10.95 km (6.80 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=20, Nph=34, Dmin=5.1 km, Rmss=0.11 sec, Erho=0.21 km, Erzz=0.33 km, Gp=61 degrees |
| Event ID# | ci41136015 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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