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 event has been reviewed by a seismologist.
A micro earthquake occurred at 2:47:37 PM (PDT) on Wednesday, August 20, 2025.
The magnitude 1.1 event occurred 15 km (9 miles) NE (36 degrees) of Lake Arrowhead, CA.
The hypocentral depth is 6 km ( 3 miles).
| Magnitude | 1.1 - local magnitude (Ml) |
| Time | Wednesday, August 20, 2025 at 2:47:37 PM (PDT) Wednesday, August 20, 2025 at 21:47:37 (UTC) |
| Distance from |
Lake Arrowhead, CA - 15 km (9 miles) NE (36 degrees) Lucerne Valley, CA - 15 km (9 miles) SW (231 degrees) Running Springs, CA - 17 km (11 miles) N (5 degrees) Apple Valley, CA - 18 km (11 miles) SSE (152 degrees) Hesperia, CA - 20 km (13 miles) ESE (111 degrees) |
| Coordinates | 34 deg. 21.6 min. N (34.359N), 117 deg. 5.6 min. W (117.093W) |
| Depth | 5.51 km (3.40 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=33, Nph=51, Dmin=13.9 km, Rmss=0.16 sec, Erho=0.22 km, Erzz=0.65 km, Gp=84 degrees |
| Event ID# | ci41270144 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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