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 1:03:58 PM (PST) on Thursday, January 8, 2026.
The magnitude 1.1 event (a probable quarry explosion) occurred 5 km (3 miles) NE (48 degrees) of Bradbury, CA.
The hypocentral depth is -1 km (-1 miles).
| Magnitude | 1.1 - local magnitude (Ml) |
| Time | Thursday, January 8, 2026 at 1:03:58 PM (PST) Thursday, January 8, 2026 at 21:03:58 (UTC) |
| Distance from |
Bradbury, CA - 5 km (3 miles) NE (48 degrees) Azusa, CA - 5 km (3 miles) NNW (341 degrees) Duarte, CA - 6 km (4 miles) NE (46 degrees) Monrovia, CA - 7 km (5 miles) ENE (62 degrees) Glendora, CA - 7 km (5 miles) NW (310 degrees) |
| Coordinates | 34 deg. 10.8 min. N (34.180N), 117 deg. 55.6 min. W (117.927W) |
| Depth | -0.91 km (-0.60 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=11, Nph=11, Dmin=5.4 km, Rmss=0.2 sec, Erho=0.5 km, Erzz=31.61 km, Gp=105 degrees |
| Event ID# | ci41154567 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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