Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A minor earthquake occurred at 6:27:00 AM (PST) on Monday, February 2, 2026.
The magnitude 3.8 event occurred 4 km (3 miles) SSE of San Ramon, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 3.8 - moment magnitude (Mw) |
| Time | Monday, February 2, 2026 at 6:27:00 AM (PST) Monday, February 2, 2026 at 14:27:00 (UTC) |
| Distance from |
San Ramon, CA - 4 km (3 miles) SSE (148 degrees) Dublin, CA - 5 km (3 miles) NNW (343 degrees) Danville, CA - 9 km (6 miles) SSE (153 degrees) Blackhawk, CA - 9 km (6 miles) SSW (207 degrees) Diablo, CA - 10 km (6 miles) S (178 degrees) |
| Coordinates | 37 deg. 44.9 min. N (37.748N), 121 deg. 57.2 min. W (121.953W) |
| Depth | 9.10 km (5.70 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=200, Nph=221, Dmin=4.7 km, Rmss=0.22 sec, Erho=0.11 km, Erzz=0.24 km, Gp=15 degrees |
| Event ID# | nc75305671 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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