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 8:40:45 AM (PDT) on Wednesday, September 24, 2025.
The magnitude 1.2 event occurred 5 km (3 miles) SSW of Alameda, CA.
The hypocentral depth is 1 km (0.50 miles).
| Magnitude | 1.2 - duration magnitude (Md) |
| Time | Wednesday, September 24, 2025 at 8:40:45 AM (PDT) Wednesday, September 24, 2025 at 15:40:45 (UTC) |
| Distance from |
Alameda, CA - 5 km (3 miles) SSW (196 degrees) Oakland, CA - 9 km (5 miles) SSW (197 degrees) San Leandro, CA - 9 km (6 miles) W (268 degrees) Piedmont, CA - 12 km (7 miles) S (191 degrees) Emeryville, CA - 12 km (8 miles) S (169 degrees) |
| Coordinates | 37 deg. 43.3 min. N (37.722N), 122 deg. 15.4 min. W (122.257W) |
| Depth | 0.77 km (0.50 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=4, Nph=4, Dmin=12.2 km, Rmss=0.03 sec, Erho=3.58 km, Erzz=8.10999966 km, Gp=229 degrees |
| Event ID# | nc75241442 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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