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 #4: 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 9:06:11 PM (PDT) on Monday, July 28, 2025.
The magnitude 1.1 event occurred 6 km (4 miles) WSW of Anza, CA.
The hypocentral depth is 3 km ( 2 miles).


Magnitude 1.1 - local magnitude (Ml)
Time Monday, July 28, 2025 at 9:06:11 PM (PDT)
Tuesday, July 29, 2025 at 4:06:11 (UTC)
Distance from Anza, CA - 6 km (4 miles) WSW (238 degrees)
Aguanga, CA - 15 km (9 miles) NE (54 degrees)
Palomar Observatory, CA - 22 km (14 miles) NNE (33 degrees)
Idyllwild, CA - 24 km (15 miles) S (183 degrees)
Warner Springs, CA - 28 km (18 miles) NNW (341 degrees)
Coordinates 33 deg. 31.5 min. N (33.524N), 116 deg. 43.9 min. W (116.732W)
Depth 2.85 km (1.80 miles)
Quality Good
Location Quality Parameters Nst=59, Nph=103, Dmin=4.6 km, Rmss=0.21 sec, Erho=0.14 km, Erzz=0.46 km, Gp=22 degrees
Event ID# ci41035143
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)