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 4:01:32 PM (PDT) on Monday, September 8, 2025.
The magnitude 2.1 event occurred 7 km (4 miles) WSW of Calimesa, CA.
The hypocentral depth is 16 km (10 miles).


Magnitude 2.1 - local magnitude (Ml)
Time Monday, September 8, 2025 at 4:01:32 PM (PDT)
Monday, September 8, 2025 at 23:01:32 (UTC)
Distance from Calimesa, CA - 7 km (4 miles) WSW (237 degrees)
Moreno Valley, CA - 11 km (7 miles) ENE (73 degrees)
Yucaipa, CA - 11 km (7 miles) SW (217 degrees)
Mentone, CA - 13 km (8 miles) S (172 degrees)
Redlands, CA - 13 km (8 miles) SSE (150 degrees)
Coordinates 33 deg. 57.3 min. N (33.956N), 117 deg. 6.9 min. W (117.114W)
Depth 16.28 km (10.10 miles)
Quality Good
Location Quality Parameters Nst=101, Nph=188, Dmin=5.5 km, Rmss=0.17 sec, Erho=0.11 km, Erzz=0.29 km, Gp=14 degrees
Event ID# ci41286536
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