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 #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 11:22:57 AM (PDT) on Friday, July 25, 2025.
The magnitude 0.9 event (a probable quarry explosion) occurred 5 km (3 miles) NE (47 degrees) of Bradbury, CA.
The hypocentral depth is -1 km (-1 miles).
| Magnitude | 0.9 - local magnitude (Ml) |
| Time | Friday, July 25, 2025 at 11:22:57 AM (PDT) Friday, July 25, 2025 at 18:22:57 (UTC) |
| Distance from |
Bradbury, CA - 5 km (3 miles) NE (47 degrees) Azusa, CA - 5 km (3 miles) NNW (339 degrees) Duarte, CA - 6 km (4 miles) NE (45 degrees) Monrovia, CA - 7 km (5 miles) ENE (62 degrees) Irwindale, CA - 8 km (5 miles) N (4 degrees) |
| Coordinates | 34 deg. 10.8 min. N (34.179N), 117 deg. 55.7 min. W (117.929W) |
| Depth | -1.47 km (-0.90 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=10, Nph=10, Dmin=5.6 km, Rmss=0.13 sec, Erho=0.59 km, Erzz=31.61 km, Gp=178 degrees |
| Event ID# | ci41032111 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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