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 #3: 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 5:42:52 PM (PST) on Saturday, December 20, 2025.
The magnitude 1.4 event occurred 1 km (1 miles) NNE (26 degrees) of Loma Linda, CA.
The hypocentral depth is 12 km ( 8 miles).
| Magnitude | 1.4 - local magnitude (Ml) |
| Time | Saturday, December 20, 2025 at 5:42:52 PM (PST) Sunday, December 21, 2025 at 1:42:52 (UTC) |
| Distance from |
Loma Linda, CA - 1 km (1 miles) NNE (26 degrees) Grand Terrace, CA - 6 km (4 miles) ENE (63 degrees) Colton, CA - 6 km (4 miles) ESE (107 degrees) Redlands, CA - 7 km (4 miles) W (273 degrees) San Bernardino, CA - 9 km (5 miles) SSE (156 degrees) |
| Coordinates | 34 deg. 3.5 min. N (34.059N), 117 deg. 15.3 min. W (117.255W) |
| Depth | 12.17 km (7.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=69, Nph=123, Dmin=5.8 km, Rmss=0.16 sec, Erho=0.13 km, Erzz=0.35 km, Gp=32 degrees |
| Event ID# | ci41144247 |
| 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)
