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 #3: 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 12:32:07 PM (PDT) on Wednesday, September 9, 2026.
The magnitude 1.7 event occurred 5 km (3 miles) SE of Walnut, CA.
The hypocentral depth is 13 km ( 8 miles).
| Magnitude | 1.7 - local magnitude (Ml) |
| Time | Wednesday, September 9, 2026 at 12:32:07 PM (PDT) Wednesday, September 9, 2026 at 19:32:07 (UTC) |
| Distance from |
Walnut, CA - 5 km (3 miles) SE (135 degrees) Diamond Bar, CA - 5 km (3 miles) SSW (200 degrees) Chino Hills, CA - 6 km (4 miles) W (266 degrees) Rowland Heights, CA - 7 km (5 miles) ENE (78 degrees) South San Jose Hills, CA - 8 km (5 miles) ESE (110 degrees) |
| Coordinates | 33 deg. 59.4 min. N (33.989N), 117 deg. 49.7 min. W (117.828W) |
| Depth | 13.18 km (8.20 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=17, Nph=21, Dmin=17.6 km, Rmss=0.34 sec, Erho=1.16 km, Erzz=2.54 km, Gp=129 degrees |
| Event ID# | ci41543672 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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