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 #7: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 11:54:06 PM (PDT) on Tuesday, October 21, 2025.
The magnitude 1.3 event occurred 19 km (12 miles) W of Ludlow, CA.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 1.3 - local magnitude (Ml)
Time Tuesday, October 21, 2025 at 11:54:06 PM (PDT)
Wednesday, October 22, 2025 at 6:54:06 (UTC)
Distance from Ludlow, CA - 19 km (12 miles) W (263 degrees)
Amboy, CA - 59 km (36 miles) WNW (286 degrees)
Lucerne Valley, CA - 62 km (39 miles) ENE (63 degrees)
Joshua Tree, CA - 63 km (39 miles) N (356 degrees)
Barstow, CA - 64 km (40 miles) ESE (110 degrees)
Coordinates 34 deg. 42.0 min. N (34.700N), 116 deg. 21.8 min. W (116.363W)
Depth 6.78 km (4.20 miles)
Quality Good
Location Quality Parameters Nst=27, Nph=45, Dmin=14.6 km, Rmss=0.14 sec, Erho=0.16 km, Erzz=0.6 km, Gp=45 degrees
Event ID# ci41112583
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)