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 11:04:30 AM (PDT) on Monday, March 23, 2026.
The magnitude 1.5 event occurred 3 km (2 miles) ESE of San Ramon, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 1.5 - duration magnitude (Md) |
| Time | Monday, March 23, 2026 at 11:04:30 AM (PDT) Monday, March 23, 2026 at 18:04:30 (UTC) |
| Distance from |
San Ramon, CA - 3 km (2 miles) ESE (111 degrees) Diablo, CA - 7 km (4 miles) S (173 degrees) Blackhawk, CA - 7 km (4 miles) SSW (212 degrees) Danville, CA - 7 km (5 miles) SE (141 degrees) Dublin, CA - 8 km (5 miles) N (352 degrees) |
| Coordinates | 37 deg. 46.2 min. N (37.771N), 121 deg. 56.8 min. W (121.947W) |
| Depth | 6.40 km (4.00 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=16, Nph=16, Dmin=2.3 km, Rmss=0.10 sec, Erho=0.32 km, Erzz=0.560000002 km, Gp=70 degrees |
| Event ID# | nc75331912 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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