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 #4: 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 11:47:28 AM (PDT) on Friday, September 5, 2025.
The magnitude 1.1 event occurred 4 km (2 miles) NNW of Azusa, CA.
The hypocentral depth is 1 km ( 1 mile).
| Magnitude | 1.1 - local magnitude (Ml) |
| Time | Friday, September 5, 2025 at 11:47:28 AM (PDT) Friday, September 5, 2025 at 18:47:28 (UTC) |
| Distance from |
Azusa, CA - 4 km (2 miles) NNW (332 degrees) Bradbury, CA - 4 km (3 miles) ENE (62 degrees) Duarte, CA - 5 km (3 miles) ENE (57 degrees) Monrovia, CA - 7 km (4 miles) ENE (73 degrees) Irwindale, CA - 7 km (4 miles) N (6 degrees) |
| Coordinates | 34 deg. 9.9 min. N (34.166N), 117 deg. 55.7 min. W (117.928W) |
| Depth | 1.21 km (0.80 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=20, Nph=26, Dmin=5.4 km, Rmss=0.21 sec, Erho=0.43 km, Erzz=0.55 km, Gp=146 degrees |
| Event ID# | ci41284168 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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