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 8:08:54 PM (PDT) on Tuesday, August 4, 2026.
The magnitude 1.1 event occurred 7 km (4 miles) N of Fontana, CA.
The hypocentral depth is 7 km ( 4 miles).
| Magnitude | 1.1 - local magnitude (Ml) |
| Time | Tuesday, August 4, 2026 at 8:08:54 PM (PDT) Wednesday, August 5, 2026 at 3:08:54 (UTC) |
| Distance from |
Fontana, CA - 7 km (4 miles) N (352 degrees) Devore, CA - 9 km (6 miles) SW (221 degrees) Rancho Cucamonga, CA - 11 km (7 miles) ENE (69 degrees) Lytle Creek, CA - 11 km (7 miles) SSE (166 degrees) Muscoy, CA - 11 km (7 miles) W (273 degrees) |
| Coordinates | 34 deg. 9.6 min. N (34.159N), 117 deg. 28.1 min. W (117.468W) |
| Depth | 6.99 km (4.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=60, Nph=102, Dmin=5.3 km, Rmss=0.18 sec, Erho=0.16 km, Erzz=0.33 km, Gp=24 degrees |
| Event ID# | ci40666354 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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