Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California
Version #3: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.
A micro earthquake occurred at 1:20:54 PM (PST) on Monday, December 1, 2025.
The magnitude 1.1 event occurred 4 km (2 miles) ENE (60 degrees) of Bradbury, CA.
The hypocentral depth is 2 km ( 1 mile).
| Magnitude | 1.1 - local magnitude (Ml) |
| Time | Monday, December 1, 2025 at 1:20:54 PM (PST) Monday, December 1, 2025 at 21:20:54 (UTC) |
| Distance from |
Bradbury, CA - 4 km (2 miles) ENE (60 degrees) Azusa, CA - 4 km (3 miles) NW (320 degrees) Duarte, CA - 5 km (3 miles) NE (54 degrees) Monrovia, CA - 6 km (4 miles) ENE (74 degrees) Irwindale, CA - 6 km (4 miles) N (358 degrees) |
| Coordinates | 34 deg. 9.8 min. N (34.163N), 117 deg. 56.2 min. W (117.937W) |
| Depth | 1.62 km (1.00 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=14, Nph=17, Dmin=4.2 km, Rmss=0.27 sec, Erho=0.69 km, Erzz=0.92 km, Gp=136 degrees |
| Event ID# | ci41130479 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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