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 #7: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 4:32:54 PM (PDT) on Tuesday, August 12, 2025.
The magnitude 1.3 event (a probable quarry explosion) occurred 5 km (3 miles) NW of Boron, CA.
The hypocentral depth is -1 km (-0.50 miles).
| Magnitude | 1.3 - local magnitude (Ml) |
| Time | Tuesday, August 12, 2025 at 4:32:54 PM (PDT) Tuesday, August 12, 2025 at 23:32:54 (UTC) |
| Distance from |
Boron, CA - 5 km (3 miles) NW (323 degrees) Edwards Air Force Base, CA - 27 km (17 miles) ENE (58 degrees) California City, CA - 30 km (18 miles) ESE (110 degrees) Johannesburg, CA - 38 km (24 miles) S (186 degrees) Mojave, CA - 45 km (28 miles) E (93 degrees) |
| Coordinates | 35 deg. 2.0 min. N (35.033N), 117 deg. 40.9 min. W (117.681W) |
| Depth | -0.82 km (-0.50 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=24, Nph=24, Dmin=11.0 km, Rmss=0.15 sec, Erho=0.45 km, Erzz=31.61 km, Gp=109 degrees |
| Event ID# | ci41259544 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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