Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 12:30:47 PM (PDT) on Sunday, March 15, 2026.
The magnitude 1.6 event occurred 4 km (2 miles) ESE of San Ramon, CA.
The hypocentral depth is 7 km ( 4 miles).
| Magnitude | 1.6 - duration magnitude (Md) |
| Time | Sunday, March 15, 2026 at 12:30:47 PM (PDT) Sunday, March 15, 2026 at 19:30:47 (UTC) |
| Distance from |
San Ramon, CA - 4 km (2 miles) ESE (102 degrees) Blackhawk, CA - 6 km (4 miles) SSW (206 degrees) Diablo, CA - 7 km (4 miles) SSE (165 degrees) Dublin, CA - 8 km (5 miles) N (359 degrees) Danville, CA - 8 km (5 miles) SE (134 degrees) |
| Coordinates | 37 deg. 46.4 min. N (37.773N), 121 deg. 56.2 min. W (121.938W) |
| Depth | 7.00 km (4.30 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=25, Nph=25, Dmin=1.6 km, Rmss=0.06 sec, Erho=0.2 km, Erzz=0.35 km, Gp=58 degrees |
| Event ID# | nc75327827 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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