Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 11:04:53 PM (PDT) on Friday, August 15, 2025.
The magnitude 1.0 event occurred 10 km (6 miles) E (97 degrees) of Alum Rock, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Friday, August 15, 2025 at 11:04:53 PM (PDT) Saturday, August 16, 2025 at 6:04:53 (UTC) |
| Distance from |
Alum Rock, CA - 10 km (6 miles) E (97 degrees) East Foothills, CA - 10 km (6 miles) ESE (107 degrees) Seven Trees, CA - 14 km (8 miles) NE (55 degrees) San Jose, CA - 16 km (10 miles) E (84 degrees) Buena Vista, CA - 18 km (11 miles) ENE (78 degrees) |
| Coordinates | 37 deg. 21.3 min. N (37.355N), 121 deg. 42.7 min. W (121.712W) |
| Depth | 9.03 km (5.60 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=33, Nph=37, Dmin=6.3 km, Rmss=0.07 sec, Erho=0.17 km, Erzz=0.31 km, Gp=39 degrees |
| Event ID# | nc75224457 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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