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 8:35:39 AM (PDT) on Monday, July 21, 2025.
The magnitude 1.0 event occurred 2 km (1 miles) SW of Cobb, CA.
The hypocentral depth is 3 km ( 2 miles).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Monday, July 21, 2025 at 8:35:39 AM (PDT) Monday, July 21, 2025 at 15:35:39 (UTC) |
| Distance from |
Cobb, CA - 2 km (1 miles) SW (230 degrees) The Geysers, CA - 4 km (3 miles) NNE (22 degrees) Middletown, CA - 13 km (8 miles) WNW (302 degrees) Lower Lake, CA - 16 km (10 miles) SW (225 degrees) Hidden Valley Lake, CA - 16 km (10 miles) W (272 degrees) |
| Coordinates | 38 deg. 48.7 min. N (38.812N), 122 deg. 44.3 min. W (122.738W) |
| Depth | 2.97 km (1.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=7, Nph=7, Dmin=3.2 km, Rmss=0.01 sec, Erho=0.62 km, Erzz=1.96000004 km, Gp=140 degrees |
| Event ID# | nc75212947 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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