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 3:15:50 AM (PDT) on Monday, August 17, 2026.
The magnitude 0.5 event occurred 4 km (2 miles) NNW of Fontana, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 0.5 - local magnitude (Ml) |
| Time | Monday, August 17, 2026 at 3:15:50 AM (PDT) Monday, August 17, 2026 at 10:15:50 (UTC) |
| Distance from |
Fontana, CA - 4 km (2 miles) NNW (335 degrees) Rancho Cucamonga, CA - 10 km (6 miles) E (86 degrees) Bloomington, CA - 10 km (6 miles) NW (312 degrees) Rialto, CA - 10 km (6 miles) WNW (284 degrees) Devore, CA - 12 km (8 miles) SSW (213 degrees) |
| Coordinates | 34 deg. 7.7 min. N (34.129N), 117 deg. 28.5 min. W (117.475W) |
| Depth | 5.11 km (3.20 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=28, Nph=45, Dmin=6.0 km, Rmss=0.15 sec, Erho=0.25 km, Erzz=0.35 km, Gp=55 degrees |
| Event ID# | ci40674330 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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