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 is a computer-generated message. This event has not yet been reviewed by a seismologist.
A micro earthquake occurred at 7:00:42 PM (PDT) on Thursday, September 18, 2025.
The magnitude 0.9 event occurred 6 km (4 miles) WNW of Calimesa, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 0.9 - local magnitude (Ml) |
| Time | Thursday, September 18, 2025 at 7:00:42 PM (PDT) Friday, September 19, 2025 at 2:00:42 (UTC) |
| Distance from |
Calimesa, CA - 6 km (4 miles) WNW (296 degrees) Mentone, CA - 7 km (4 miles) SSE (163 degrees) Yucaipa, CA - 7 km (4 miles) WSW (250 degrees) Redlands, CA - 8 km (5 miles) SE (127 degrees) Loma Linda, CA - 14 km (9 miles) ESE (106 degrees) |
| Coordinates | 34 deg. 0.8 min. N (34.013N), 117 deg. 6.8 min. W (117.113W) |
| Depth | 9.19 km (5.70 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=45, Nph=77, Dmin=2.5 km, Rmss=0.17 sec, Erho=0.16 km, Erzz=0.43 km, Gp=50 degrees |
| Event ID# | ci40445642 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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