Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE 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 earthquake occurred at 2:14:17 PM (PDT) on Tuesday, September 30, 2025.
The magnitude 0.3 event occurred 3 km (2 miles) WSW of Cobb, CA.
The hypocentral depth is 2 km ( 1 mile).
| Magnitude | 0.3 - duration magnitude (Md) |
| Time | Tuesday, September 30, 2025 at 2:14:17 PM (PDT) Tuesday, September 30, 2025 at 21:14:17 (UTC) |
| Distance from |
Cobb, CA - 3 km (2 miles) WSW (254 degrees) The Geysers, CA - 4 km (3 miles) N (357 degrees) Middletown, CA - 14 km (9 miles) WNW (299 degrees) Lower Lake, CA - 17 km (10 miles) SW (230 degrees) Hidden Valley Lake, CA - 17 km (11 miles) W (272 degrees) |
| Coordinates | 38 deg. 48.9 min. N (38.814N), 122 deg. 45.5 min. W (122.759W) |
| Depth | 2.20 km (1.40 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=7, Nph=12, Dmin=1.9 km, Rmss=0.02 sec, Erho=0.61 km, Erzz=0.44 km, Gp=283 degrees |
| Event ID# | nc75243211 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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