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 9:57:00 AM (PDT) on Thursday, July 31, 2025.
The magnitude 2.1 event occurred 7 km (4 miles) NNE (32 degrees) of Fontana, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 2.1 - local magnitude (Ml) |
| Time | Thursday, July 31, 2025 at 9:57:00 AM (PDT) Thursday, July 31, 2025 at 16:57:00 (UTC) |
| Distance from |
Fontana, CA - 7 km (4 miles) NNE (32 degrees) Rialto, CA - 7 km (4 miles) NW (316 degrees) Muscoy, CA - 7 km (4 miles) W (265 degrees) Devore, CA - 8 km (5 miles) SSW (192 degrees) Bloomington, CA - 9 km (6 miles) NNW (346 degrees) |
| Coordinates | 34 deg. 8.9 min. N (34.149N), 117 deg. 25.2 min. W (117.420W) |
| Depth | 6.35 km (3.90 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=91, Nph=157, Dmin=4.9 km, Rmss=0.17 sec, Erho=0.12 km, Erzz=0.3 km, Gp=14 degrees |
| Event ID# | ci41249576 |
| 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)
