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 is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 4:16:52 PM (PDT) on Thursday, October 16, 2025.
The magnitude 1.4 event occurred 3 km (2 miles) ESE of Loma Linda, CA.
The hypocentral depth is 6 km ( 3 miles).


Magnitude 1.4 - local magnitude (Ml)
Time Thursday, October 16, 2025 at 4:16:52 PM (PDT)
Thursday, October 16, 2025 at 23:16:52 (UTC)
Distance from Loma Linda, CA - 3 km (2 miles) ESE (106 degrees)
Redlands, CA - 5 km (3 miles) WSW (253 degrees)
Grand Terrace, CA - 7 km (5 miles) E (83 degrees)
Colton, CA - 8 km (5 miles) ESE (116 degrees)
Highland, CA - 10 km (6 miles) SSW (194 degrees)
Coordinates 34 deg. 2.5 min. N (34.042N), 117 deg. 14.1 min. W (117.235W)
Depth 5.53 km (3.40 miles)
Quality Fair
Location Quality Parameters Nst=40, Nph=53, Dmin=11.5 km, Rmss=0.16 sec, Erho=0.22 km, Erzz=1.38 km, Gp=48 degrees
Event ID# ci41109631
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)