Recent Earthquakes in California and Nevada
== PRELIMINARY EVENT REPORT ==
Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California
Version #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 12:41:48 PM (PST) on Thursday, December 4, 2025.
The magnitude 1.5 event (a probable quarry explosion) occurred 16 km (10 miles) NNE (24 degrees) of Apple Valley, CA.
The hypocentral depth is -2 km (-1 miles).
| Magnitude | 1.5 - local magnitude (Ml) |
| Time | Thursday, December 4, 2025 at 12:41:48 PM (PST) Thursday, December 4, 2025 at 20:41:48 (UTC) |
| Distance from |
Apple Valley, CA - 16 km (10 miles) NNE (24 degrees) Victorville, CA - 19 km (12 miles) ENE (57 degrees) Lucerne Valley, CA - 25 km (15 miles) NNW (327 degrees) Mountain View Acres, CA - 26 km (16 miles) NE (55 degrees) Adelanto, CA - 28 km (17 miles) ENE (78 degrees) |
| Coordinates | 34 deg. 37.9 min. N (34.632N), 117 deg. 6.8 min. W (117.114W) |
| Depth | -1.57 km (-1.00 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=34, Nph=49, Dmin=23.2 km, Rmss=0.15 sec, Erho=0.2 km, Erzz=31.61 km, Gp=31 degrees |
| Event ID# | ci41132687 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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