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 6:15:11 AM (PDT) on Sunday, September 20, 2026.
The magnitude 1.0 event occurred 5 km (3 miles) WNW of Calimesa, CA.
The hypocentral depth is 18 km (11 miles).
| Magnitude | 1.0 - local magnitude (Ml) |
| Time | Sunday, September 20, 2026 at 6:15:11 AM (PDT) Sunday, September 20, 2026 at 13:15:11 (UTC) |
| Distance from |
Calimesa, CA - 5 km (3 miles) WNW (285 degrees) Yucaipa, CA - 7 km (4 miles) WSW (239 degrees) Mentone, CA - 8 km (5 miles) SSE (164 degrees) Redlands, CA - 9 km (6 miles) SE (132 degrees) Moreno Valley, CA - 14 km (8 miles) NE (53 degrees) |
| Coordinates | 34 deg. 0.0 min. N (34.001N), 117 deg. 6.6 min. W (117.110W) |
| Depth | 17.65 km (11.00 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=62, Nph=113, Dmin=3.9 km, Rmss=0.17 sec, Erho=0.17 km, Erzz=0.37 km, Gp=39 degrees |
| Event ID# | ci41335551 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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