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 7:55:19 PM (PST) on Saturday, January 31, 2026.
The magnitude 1.3 event occurred 9 km (6 miles) SW of Middletown, CA.
The hypocentral depth is 14 km ( 9 miles).
| Magnitude | 1.3 - duration magnitude (Md) |
| Time | Saturday, January 31, 2026 at 7:55:19 PM (PST) Sunday, February 1, 2026 at 3:55:19 (UTC) |
| Distance from |
Middletown, CA - 9 km (6 miles) SW (223 degrees) The Geysers, CA - 11 km (7 miles) SSE (147 degrees) Cobb, CA - 15 km (9 miles) SSE (167 degrees) Calistoga, CA - 16 km (10 miles) NW (324 degrees) Hidden Valley Lake, CA - 17 km (11 miles) SW (221 degrees) |
| Coordinates | 38 deg. 41.6 min. N (38.693N), 122 deg. 41.1 min. W (122.686W) |
| Depth | 14.12 km (8.80 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=7, Nph=7, Dmin=8.4 km, Rmss=0.07 sec, Erho=1.69 km, Erzz=2.31999993 km, Gp=201 degrees |
| Event ID# | nc75304976 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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