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 2:23:17 AM (PDT) on Saturday, October 18, 2025.
The magnitude 2.3 event occurred 11 km (7 miles) ESE of Alum Rock, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 2.3 - duration magnitude (Md) |
| Time | Saturday, October 18, 2025 at 2:23:17 AM (PDT) Saturday, October 18, 2025 at 9:23:17 (UTC) |
| Distance from |
Alum Rock, CA - 11 km (7 miles) ESE (103 degrees) East Foothills, CA - 11 km (7 miles) ESE (112 degrees) Seven Trees, CA - 14 km (8 miles) ENE (61 degrees) San Jose, CA - 17 km (10 miles) E (88 degrees) Buena Vista, CA - 19 km (12 miles) E (82 degrees) |
| Coordinates | 37 deg. 20.6 min. N (37.344N), 121 deg. 42.3 min. W (121.704W) |
| Depth | 7.67 km (4.80 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=61, Nph=55, Dmin=5.5 km, Rmss=0.06 sec, Erho=0.11 km, Erzz=0.310000002 km, Gp=38 degrees |
| Event ID# | nc75250961 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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