Recent Earthquakes in California and Nevada
== PRELIMINARY EVENT REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 11:09:52 AM (PDT) on Thursday, April 23, 2026.
The magnitude 1.6 event (a probable quarry explosion) occurred 2 km (1 miles) ESE of Aromas, CA.
The hypocentral depth is -0.12 km (-0.10 miles).
| Magnitude | 1.6 - duration magnitude (Md) |
| Time | Thursday, April 23, 2026 at 11:09:52 AM (PDT) Thursday, April 23, 2026 at 18:09:52 (UTC) |
| Distance from |
Aromas, CA - 2 km (1 miles) ESE (103 degrees) San Juan Bautista, CA - 9 km (6 miles) WNW (299 degrees) Las Lomas, CA - 10 km (6 miles) ENE (77 degrees) Pajaro, CA - 11 km (7 miles) E (101 degrees) Watsonville, CA - 12 km (7 miles) ESE (103 degrees) |
| Coordinates | 36 deg. 53.1 min. N (36.886N), 121 deg. 37.6 min. W (121.626W) |
| Depth | -0.12 km (-0.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=20, Nph=20, Dmin=3.1 km, Rmss=0.19 sec, Erho=0.33 km, Erzz=31.61 km, Gp=47 degrees |
| Event ID# | nc75350277 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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