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 12:26:56 PM (PST) on Wednesday, November 4, 2026.
The magnitude 1.1 event (a probable quarry explosion) occurred 6 km (4 miles) NE (46 degrees) of Bradbury, CA.
The hypocentral depth is -1 km (-1 miles).
| Magnitude | 1.1 - local magnitude (Ml) |
| Time | Wednesday, November 4, 2026 at 12:26:56 PM (PST) Wednesday, November 4, 2026 at 20:26:56 (UTC) |
| Distance from |
Bradbury, CA - 6 km (4 miles) NE (46 degrees) Azusa, CA - 6 km (4 miles) NNW (346 degrees) Duarte, CA - 7 km (4 miles) NE (45 degrees) Monrovia, CA - 8 km (5 miles) ENE (60 degrees) Citrus, CA - 8 km (5 miles) NNW (339 degrees) |
| Coordinates | 34 deg. 11.1 min. N (34.184N), 117 deg. 55.4 min. W (117.924W) |
| Depth | -0.91 km (-0.60 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=25, Nph=25, Dmin=5.3 km, Rmss=0.2 sec, Erho=0.39 km, Erzz=31.61 km, Gp=56 degrees |
| Event ID# | ci41358431 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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