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 #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 1:38:13 AM (PDT) on Wednesday, August 27, 2025.
The magnitude 0.4 event occurred 8 km (5 miles) NNE (12 degrees) of Glendora, CA.
The hypocentral depth is 15 km ( 9 miles).
| Magnitude | 0.4 - local magnitude (Ml) |
| Time | Wednesday, August 27, 2025 at 1:38:13 AM (PDT) Wednesday, August 27, 2025 at 8:38:13 (UTC) |
| Distance from |
Glendora, CA - 8 km (5 miles) NNE (12 degrees) Azusa, CA - 10 km (6 miles) NE (35 degrees) Charter Oak, CA - 11 km (7 miles) N (359 degrees) Citrus, CA - 11 km (7 miles) NNE (22 degrees) San Dimas, CA - 12 km (7 miles) NNW (341 degrees) |
| Coordinates | 34 deg. 12.3 min. N (34.206N), 117 deg. 50.8 min. W (117.847W) |
| Depth | 14.83 km (9.20 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=13, Nph=22, Dmin=4.8 km, Rmss=0.12 sec, Erho=0.32 km, Erzz=0.64 km, Gp=57 degrees |
| Event ID# | ci37740028 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
[
Index map ||
Big earthquake list ||
All earthquake list ||
Glossary of terms ||
Top page
]
[
Did you feel it? ||
ShakeMaps
|| Relative2Me
]
[ Data Sources ]
Special maps
Long Valley || Los Angeles || San Francisco
Data Sources
US and World - USGS/NEIC = National Earthquake Information Center
Northern California - UCB = University of California, Berkeley
Southern California - Caltech = California Institute of Technology
Nevada - UNR = University of Nevada, Reno
Offshore = West Coast & Alaska Tsunami Warning Center
...all members of the Advanced National Seismic System (ANSS)
