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 #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 3:10:55 AM (PDT) on Saturday, August 30, 2025.
The magnitude 0.9 event occurred 2 km (1 miles) E (99 degrees) of Charter Oak, CA.
The hypocentral depth is 14 km ( 9 miles).
| Magnitude | 0.9 - local magnitude (Ml) |
| Time | Saturday, August 30, 2025 at 3:10:55 AM (PDT) Saturday, August 30, 2025 at 10:10:55 (UTC) |
| Distance from |
Charter Oak, CA - 2 km (1 miles) E (99 degrees) San Dimas, CA - 2 km (1 miles) WSW (252 degrees) Glendora, CA - 5 km (3 miles) SE (139 degrees) La Verne, CA - 6 km (3 miles) W (270 degrees) Covina, CA - 6 km (4 miles) ENE (78 degrees) |
| Coordinates | 34 deg. 6.0 min. N (34.101N), 117 deg. 49.7 min. W (117.829W) |
| Depth | 14.15 km (8.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=44, Nph=74, Dmin=2.2 km, Rmss=0.19 sec, Erho=0.25 km, Erzz=0.42 km, Gp=110 degrees |
| Event ID# | ci41279232 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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