Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #916590: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A minor earthquake occurred at 9:17:52 PM (PDT) on Monday, April 27, 2026.
The magnitude 3.4 event occurred 13 km (8 miles) NNE (20 degrees) of Portola, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 3.4 - moment magnitude (Mw) |
| Time | Monday, April 27, 2026 at 9:17:52 PM (PDT) Tuesday, April 28, 2026 at 4:17:52 (UTC) |
| Distance from |
Portola, CA - 13 km (8 miles) NNE (20 degrees) East Quincy, CA - 41 km (26 miles) E (92 degrees) Janesville, CA - 43 km (27 miles) SSE (168 degrees) Quincy, CA - 45 km (28 miles) E (92 degrees) Cold Springs, NV - 46 km (29 miles) NW (306 degrees) |
| Coordinates | 39 deg. 55.3 min. N (39.921N), 120 deg. 25.0 min. W (120.416W) |
| Depth | 7.86 km (4.90 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=10, Nph=18, Dmin=7.6 km, Rmss=0.13 sec, Erho=0.21 km, Erzz=0.59 km, Gp=152 degrees |
| Event ID# | nc75352982 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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