Recent Earthquakes in California and Nevada
== PRELIMINARY EVENT REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #4: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro explosion occurred at 4:30:01 PM (PDT) on Thursday, April 23, 2026.
The magnitude 1.0 event occurred 5 km (3 miles) SW of Cotati, CA.
The hypocentral depth is -0.13 km (-0.10 miles).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Thursday, April 23, 2026 at 4:30:01 PM (PDT) Thursday, April 23, 2026 at 23:30:01 (UTC) |
| Distance from |
Cotati, CA - 5 km (3 miles) SW (234 degrees) Rohnert Park, CA - 6 km (4 miles) SW (227 degrees) Penngrove, CA - 8 km (5 miles) W (271 degrees) Petaluma, CA - 13 km (8 miles) NW (307 degrees) Sebastopol, CA - 13 km (8 miles) SSE (152 degrees) |
| Coordinates | 38 deg. 18.0 min. N (38.301N), 122 deg. 45.2 min. W (122.754W) |
| Depth | -0.13 km (-0.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=11, Nph=11, Dmin=3.3 km, Rmss=0.06 sec, Erho=0.33 km, Erzz=31.61 km, Gp=83 degrees |
| Event ID# | nc75350377 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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