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 4:38:49 AM (PDT) on Friday, August 21, 2026.
The magnitude 2.3 event occurred 5 km (3 miles) SSW of Alameda, CA.
The hypocentral depth is 18 km (11 miles).
| Magnitude | 2.3 - duration magnitude (Md) |
| Time | Friday, August 21, 2026 at 4:38:49 AM (PDT) Friday, August 21, 2026 at 11:38:49 (UTC) |
| Distance from |
Alameda, CA - 5 km (3 miles) SSW (201 degrees) Oakland, CA - 8 km (5 miles) SSW (200 degrees) San Leandro, CA - 9 km (6 miles) W (270 degrees) Piedmont, CA - 11 km (7 miles) SSW (193 degrees) Emeryville, CA - 12 km (7 miles) S (170 degrees) |
| Coordinates | 37 deg. 43.5 min. N (37.725N), 122 deg. 15.7 min. W (122.261W) |
| Depth | 18.17 km (11.30 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=71, Nph=69, Dmin=0.0 km, Rmss=0.10 sec, Erho=0.19 km, Erzz=0.300000012 km, Gp=26 degrees |
| Event ID# | nc75422342 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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