Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A minor earthquake occurred at 7:21:50 AM (PDT) on Sunday, September 27, 2026.
The magnitude 3.3 event occurred 29 km (18 miles) WSW of Patterson, CA.
The hypocentral depth is 3 km ( 2 miles).
| Magnitude | 3.3 - moment magnitude (Mw) |
| Time | Sunday, September 27, 2026 at 7:21:50 AM (PDT) Sunday, September 27, 2026 at 14:21:50 (UTC) |
| Distance from |
Patterson, CA - 29 km (18 miles) WSW (258 degrees) East Foothills, CA - 32 km (20 miles) E (83 degrees) Alum Rock, CA - 34 km (21 miles) E (80 degrees) Tracy, CA - 36 km (22 miles) S (184 degrees) Morgan Hill, CA - 36 km (23 miles) NNE (29 degrees) |
| Coordinates | 37 deg. 24.9 min. N (37.416N), 121 deg. 27.2 min. W (121.453W) |
| Depth | 3.37 km (2.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=163, Nph=181, Dmin=5.8 km, Rmss=0.16 sec, Erho=0.11 km, Erzz=0.46 km, Gp=29 degrees |
| Event ID# | nc75443097 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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