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 3:06:14 PM (PDT) on Monday, September 28, 2026.
The magnitude 1.7 event occurred 2 km (1 miles) SW of San Ramon, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 1.7 - duration magnitude (Md) |
| Time | Monday, September 28, 2026 at 3:06:14 PM (PDT) Monday, September 28, 2026 at 22:06:14 (UTC) |
| Distance from |
San Ramon, CA - 2 km (1 miles) SW (219 degrees) Danville, CA - 6 km (4 miles) S (175 degrees) Diablo, CA - 8 km (5 miles) SSW (202 degrees) Dublin, CA - 9 km (5 miles) NW (323 degrees) Alamo, CA - 10 km (6 miles) SSE (161 degrees) |
| Coordinates | 37 deg. 45.9 min. N (37.764N), 121 deg. 59.6 min. W (121.994W) |
| Depth | 8.30 km (5.20 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=11, Nph=11, Dmin=6.1 km, Rmss=0.05 sec, Erho=0.36 km, Erzz=0.870000005 km, Gp=78 degrees |
| Event ID# | nc75444052 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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