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 8:39:38 PM (PDT) on Sunday, September 21, 2025.
The magnitude 0.5 event occurred 0 km (0 miles) E (94 degrees) of The Geysers, CA.
The hypocentral depth is 0.17 km (0.10 miles).
| Magnitude | 0.5 - duration magnitude (Md) |
| Time | Sunday, September 21, 2025 at 8:39:38 PM (PDT) Monday, September 22, 2025 at 3:39:38 (UTC) |
| Distance from |
The Geysers, CA - 0 km (0 miles) E (94 degrees) Cobb, CA - 6 km (3 miles) SSW (206 degrees) Middletown, CA - 12 km (8 miles) WNW (283 degrees) Hidden Valley Lake, CA - 17 km (11 miles) WSW (258 degrees) Lower Lake, CA - 19 km (12 miles) SW (220 degrees) |
| Coordinates | 38 deg. 46.6 min. N (38.777N), 122 deg. 45.1 min. W (122.751W) |
| Depth | 0.17 km (0.10 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=8, Nph=8, Dmin=1.4 km, Rmss=0.06 sec, Erho=0.35 km, Erzz=0.769999981 km, Gp=74 degrees |
| Event ID# | nc75240432 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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