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 7:50:27 PM (PST) on Saturday, February 21, 2026.
The magnitude 1.2 event occurred 2 km (1 miles) N of Diablo, CA.
The hypocentral depth is 7 km ( 4 miles).
| Magnitude | 1.2 - duration magnitude (Md) |
| Time | Saturday, February 21, 2026 at 7:50:27 PM (PST) Sunday, February 22, 2026 at 3:50:27 (UTC) |
| Distance from |
Diablo, CA - 2 km (1 miles) N (349 degrees) Danville, CA - 5 km (3 miles) NE (44 degrees) Alamo, CA - 6 km (4 miles) E (88 degrees) Blackhawk, CA - 6 km (4 miles) NW (306 degrees) San Ramon, CA - 8 km (5 miles) N (10 degrees) |
| Coordinates | 37 deg. 51.1 min. N (37.852N), 121 deg. 57.7 min. W (121.962W) |
| Depth | 6.74 km (4.20 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=10, Nph=10, Dmin=2.8 km, Rmss=0.09 sec, Erho=0.35 km, Erzz=0.620000005 km, Gp=90 degrees |
| Event ID# | nc75317452 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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