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 1:36:30 PM (PDT) on Sunday, August 16, 2026.
The magnitude 1.7 event occurred 6 km (4 miles) SE of Ontario, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 1.7 - local magnitude (Ml) |
| Time | Sunday, August 16, 2026 at 1:36:30 PM (PDT) Sunday, August 16, 2026 at 20:36:30 (UTC) |
| Distance from |
Ontario, CA - 6 km (4 miles) SE (137 degrees) Mira Loma, CA - 7 km (4 miles) WNW (291 degrees) Glen Avon, CA - 9 km (6 miles) W (272 degrees) Chino, CA - 10 km (6 miles) E (89 degrees) Norco, CA - 10 km (6 miles) NNW (341 degrees) |
| Coordinates | 34 deg. 0.8 min. N (34.014N), 117 deg. 35.0 min. W (117.584W) |
| Depth | 5.46 km (3.40 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=75, Nph=127, Dmin=2.3 km, Rmss=0.16 sec, Erho=0.12 km, Erzz=0.2 km, Gp=21 degrees |
| Event ID# | ci40674010 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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