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 8:37:23 AM (PDT) on Wednesday, August 20, 2025.
The magnitude 0.9 event occurred 10 km (6 miles) SSW of Idyllwild, CA.
The hypocentral depth is 11 km ( 7 miles).


Magnitude 0.9 - local magnitude (Ml)
Time Wednesday, August 20, 2025 at 8:37:23 AM (PDT)
Wednesday, August 20, 2025 at 15:37:23 (UTC)
Distance from Idyllwild, CA - 10 km (6 miles) SSW (205 degrees)
Anza, CA - 14 km (9 miles) NW (322 degrees)
Valle Vista, CA - 16 km (10 miles) SE (131 degrees)
Hemet, CA - 22 km (13 miles) ESE (118 degrees)
San Jacinto, CA - 23 km (14 miles) SE (129 degrees)
Coordinates 33 deg. 39.3 min. N (33.655N), 116 deg. 46.0 min. W (116.766W)
Depth 10.57 km (6.60 miles)
Quality Good
Location Quality Parameters Nst=36, Nph=59, Dmin=8.0 km, Rmss=0.19 sec, Erho=0.24 km, Erzz=0.34 km, Gp=69 degrees
Event ID# ci40403882
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