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 3:48:34 AM (PDT) on Sunday, September 27, 2026.
The magnitude 1.6 event occurred 3 km (2 miles) SW of San Ramon, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 1.6 - duration magnitude (Md) |
| Time | Sunday, September 27, 2026 at 3:48:34 AM (PDT) Sunday, September 27, 2026 at 10:48:34 (UTC) |
| Distance from |
San Ramon, CA - 3 km (2 miles) SW (228 degrees) Danville, CA - 6 km (4 miles) S (181 degrees) Diablo, CA - 9 km (5 miles) SSW (205 degrees) Dublin, CA - 9 km (6 miles) NW (320 degrees) Fairview, CA - 10 km (6 miles) NNE (23 degrees) |
| Coordinates | 37 deg. 45.8 min. N (37.764N), 122 deg. 0.0 min. W (122.001W) |
| Depth | 7.99 km (5.00 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=16, Nph=16, Dmin=6.7 km, Rmss=0.09 sec, Erho=0.3 km, Erzz=0.620000005 km, Gp=96 degrees |
| Event ID# | nc75443027 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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