Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #0: 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 9:02:49 PM (PDT) on Wednesday, September 9, 2026.
The magnitude 1.1 event occurred 1 km (1 miles) SW of Diablo, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 1.1 - duration magnitude (Md) |
| Time | Wednesday, September 9, 2026 at 9:02:49 PM (PDT) Thursday, September 10, 2026 at 4:02:49 (UTC) |
| Distance from |
Diablo, CA - 1 km (1 miles) SW (223 degrees) Danville, CA - 3 km (2 miles) ENE (75 degrees) Blackhawk, CA - 5 km (3 miles) W (281 degrees) San Ramon, CA - 6 km (3 miles) NNE (12 degrees) Alamo, CA - 6 km (4 miles) ESE (112 degrees) |
| Coordinates | 37 deg. 49.7 min. N (37.829N), 121 deg. 57.9 min. W (121.965W) |
| Depth | 5.94 km (3.70 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=4.1 km, Rmss=0.03 sec, Erho=0.27 km, Erzz=0.699999988 km, Gp=70 degrees |
| Event ID# | nc75432997 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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