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 7:31:02 AM (PST) on Monday, February 2, 2026.
The magnitude 1.8 event occurred 4 km (3 miles) SE of San Ramon, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Monday, February 2, 2026 at 7:31:02 AM (PST) Monday, February 2, 2026 at 15:31:02 (UTC) |
| Distance from |
San Ramon, CA - 4 km (3 miles) SE (133 degrees) Dublin, CA - 6 km (4 miles) N (353 degrees) Blackhawk, CA - 8 km (5 miles) SSW (204 degrees) Diablo, CA - 9 km (6 miles) S (172 degrees) Danville, CA - 9 km (6 miles) SSE (147 degrees) |
| Coordinates | 37 deg. 45.3 min. N (37.755N), 121 deg. 56.7 min. W (121.944W) |
| Depth | 7.69 km (4.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=14, Nph=13, Dmin=10.8 km, Rmss=0.09 sec, Erho=0.29 km, Erzz=0.75 km, Gp=83 degrees |
| Event ID# | nc75305836 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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