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 light earthquake occurred at 7:01:13 AM (PST) on Monday, February 2, 2026.
The magnitude 4.2 event occurred 4 km (2 miles) SE of San Ramon, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | 4.2 - moment magnitude (Mw) |
| Time | Monday, February 2, 2026 at 7:01:13 AM (PST) Monday, February 2, 2026 at 15:01:13 (UTC) |
| Distance from |
San Ramon, CA - 4 km (2 miles) SE (131 degrees) Dublin, CA - 6 km (4 miles) N (353 degrees) Blackhawk, CA - 8 km (5 miles) SSW (204 degrees) Diablo, CA - 9 km (5 miles) S (172 degrees) Danville, CA - 9 km (5 miles) SE (146 degrees) |
| Coordinates | 37 deg. 45.4 min. N (37.756N), 121 deg. 56.6 min. W (121.944W) |
| Depth | 9.56 km (5.90 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=215, Nph=234, Dmin=3.5 km, Rmss=0.22 sec, Erho=0.11 km, Erzz=0.21 km, Gp=16 degrees |
| Event ID# | nc75305736 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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