Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A minor earthquake occurred at 10:33:09 AM (PST) on Friday, January 30, 2026.
The magnitude 3.4 event occurred 4 km (3 miles) SE of San Ramon, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 3.4 - local magnitude (Ml) |
| Time | Friday, January 30, 2026 at 10:33:09 AM (PST) Friday, January 30, 2026 at 18:33:09 (UTC) |
| Distance from |
San Ramon, CA - 4 km (3 miles) SE (141 degrees) Dublin, CA - 5 km (3 miles) N (349 degrees) Blackhawk, CA - 9 km (5 miles) SSW (204 degrees) Diablo, CA - 9 km (6 miles) S (175 degrees) Danville, CA - 9 km (6 miles) SSE (150 degrees) |
| Coordinates | 37 deg. 45.0 min. N (37.750N), 121 deg. 56.9 min. W (121.948W) |
| Depth | 9.31 km (5.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=219, Nph=225, Dmin=5.6 km, Rmss=0.47 sec, Erho=0.88 km, Erzz=1.671 km, Gp=11 degrees |
| Event ID# | nc75304291 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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