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 6:23:00 AM (PDT) on Sunday, July 27, 2025.
The magnitude 1.5 event occurred 8 km (5 miles) E (99 degrees) of Alum Rock, CA.
The hypocentral depth is -0.29 km (-0.20 miles).
| Magnitude | 1.5 - duration magnitude (Md) |
| Time | Sunday, July 27, 2025 at 6:23:00 AM (PDT) Sunday, July 27, 2025 at 13:23:00 (UTC) |
| Distance from |
Alum Rock, CA - 8 km (5 miles) E (99 degrees) East Foothills, CA - 8 km (5 miles) ESE (113 degrees) Seven Trees, CA - 12 km (7 miles) NE (49 degrees) San Jose, CA - 14 km (9 miles) E (83 degrees) Buena Vista, CA - 16 km (10 miles) ENE (77 degrees) |
| Coordinates | 37 deg. 21.3 min. N (37.354N), 121 deg. 44.3 min. W (121.739W) |
| Depth | -0.29 km (-0.20 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=12, Nph=12, Dmin=8.6 km, Rmss=0.37 sec, Erho=1.47 km, Erzz=11.54 km, Gp=111 degrees |
| Event ID# | nc75215802 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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