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 7:04:03 AM (PST) on Wednesday, January 28, 2026.
The magnitude 1.6 event occurred 3 km (2 miles) ESE of San Ramon, CA.
The hypocentral depth is 7 km ( 5 miles).
| Magnitude | 1.6 - duration magnitude (Md) |
| Time | Wednesday, January 28, 2026 at 7:04:03 AM (PST) Wednesday, January 28, 2026 at 15:04:03 (UTC) |
| Distance from |
San Ramon, CA - 3 km (2 miles) ESE (107 degrees) Blackhawk, CA - 6 km (4 miles) SW (215 degrees) Diablo, CA - 7 km (4 miles) S (174 degrees) Danville, CA - 7 km (4 miles) SE (141 degrees) Dublin, CA - 8 km (5 miles) N (351 degrees) |
| Coordinates | 37 deg. 46.4 min. N (37.773N), 121 deg. 57.0 min. W (121.950W) |
| Depth | 7.43 km (4.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=16, Nph=15, Dmin=10.2 km, Rmss=0.07 sec, Erho=0.25 km, Erzz=0.790000021 km, Gp=89 degrees |
| Event ID# | nc75303161 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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