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

A micro earthquake occurred at 1:04:42 PM (PDT) on Monday, August 4, 2025.
The magnitude 1.2 event occurred 10 km (6 miles) SE of Winchester, CA.
The hypocentral depth is 12 km ( 8 miles).


Magnitude 1.2 - local magnitude (Ml)
Time Monday, August 4, 2025 at 1:04:42 PM (PDT)
Monday, August 4, 2025 at 20:04:42 (UTC)
Distance from Winchester, CA - 10 km (6 miles) SE (136 degrees)
Green Acres, CA - 12 km (7 miles) SSE (150 degrees)
Hemet, CA - 12 km (7 miles) SSW (198 degrees)
Menifee, CA - 15 km (10 miles) SE (127 degrees)
Murrieta Hot Springs, CA - 16 km (10 miles) NE (55 degrees)
Coordinates 33 deg. 38.7 min. N (33.645N), 117 deg. 0.7 min. W (117.012W)
Depth 12.41 km (7.70 miles)
Quality Good
Location Quality Parameters Nst=15, Nph=15, Dmin=0.6 km, Rmss=0.07 sec, Erho=0.57 km, Erzz=0.45 km, Gp=120 degrees
Event ID# ci41252888
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