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 8:08:33 AM (PDT) on Tuesday, August 26, 2025.
The magnitude 0.4 event occurred 7 km (4 miles) WNW of Calimesa, CA.
The hypocentral depth is 15 km ( 9 miles).


Magnitude 0.4 - local magnitude (Ml)
Time Tuesday, August 26, 2025 at 8:08:33 AM (PDT)
Tuesday, August 26, 2025 at 15:08:33 (UTC)
Distance from Calimesa, CA - 7 km (4 miles) WNW (283 degrees)
Mentone, CA - 8 km (5 miles) S (173 degrees)
Redlands, CA - 8 km (5 miles) SE (138 degrees)
Yucaipa, CA - 8 km (5 miles) WSW (245 degrees)
Moreno Valley, CA - 13 km (8 miles) NE (48 degrees)
Coordinates 34 deg. 0.1 min. N (34.002N), 117 deg. 7.5 min. W (117.125W)
Depth 14.61 km (9.10 miles)
Quality Good
Location Quality Parameters Nst=17, Nph=29, Dmin=3.9 km, Rmss=0.17 sec, Erho=0.29 km, Erzz=0.75 km, Gp=83 degrees
Event ID# ci41275360
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