Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #0: 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 3:45:03 PM (PDT) on Thursday, October 23, 2025.
The magnitude 1.3 event occurred 2 km (1 miles) WSW of Concord, CA.
The hypocentral depth is 18 km (11 miles).
| Magnitude | 1.3 - duration magnitude (Md) |
| Time | Thursday, October 23, 2025 at 3:45:03 PM (PDT) Thursday, October 23, 2025 at 22:45:03 (UTC) |
| Distance from |
Concord, CA - 2 km (1 miles) WSW (252 degrees) Pleasant Hill, CA - 3 km (2 miles) NE (55 degrees) Pacheco, CA - 4 km (3 miles) ESE (121 degrees) Waldon, CA - 5 km (3 miles) NNE (26 degrees) Walnut Creek, CA - 7 km (4 miles) NNE (24 degrees) |
| Coordinates | 37 deg. 57.8 min. N (37.963N), 122 deg. 2.0 min. W (122.033W) |
| Depth | 17.59 km (10.90 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=15, Nph=15, Dmin=11.6 km, Rmss=0.30 sec, Erho=1.71 km, Erzz=1.48000002 km, Gp=212 degrees |
| Event ID# | nc75253606 |
| 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)
