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 2:53:21 AM (PDT) on Saturday, October 18, 2025.
The magnitude 1.3 event occurred 10 km (6 miles) ESE of Alum Rock, CA.
The hypocentral depth is -0.32 km (-0.20 miles).
| Magnitude | 1.3 - duration magnitude (Md) |
| Time | Saturday, October 18, 2025 at 2:53:21 AM (PDT) Saturday, October 18, 2025 at 9:53:21 (UTC) |
| Distance from |
Alum Rock, CA - 10 km (6 miles) ESE (109 degrees) East Foothills, CA - 10 km (6 miles) ESE (120 degrees) Seven Trees, CA - 12 km (7 miles) ENE (63 degrees) San Jose, CA - 16 km (10 miles) E (92 degrees) Buena Vista, CA - 18 km (11 miles) E (85 degrees) |
| Coordinates | 37 deg. 20.1 min. N (37.335N), 121 deg. 43.1 min. W (121.718W) |
| Depth | -0.32 km (-0.20 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=10, Nph=10, Dmin=9.4 km, Rmss=0.19 sec, Erho=1.02 km, Erzz=7.11000013 km, Gp=174 degrees |
| Event ID# | nc75250996 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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