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 5:48:40 AM (PST) on Tuesday, February 3, 2026.
The magnitude 1.4 event occurred 12 km (7 miles) SE of Middletown, CA.
The hypocentral depth is 7 km ( 4 miles).
| Magnitude | 1.4 - duration magnitude (Md) |
| Time | Tuesday, February 3, 2026 at 5:48:40 AM (PST) Tuesday, February 3, 2026 at 13:48:40 (UTC) |
| Distance from |
Middletown, CA - 12 km (7 miles) SE (126 degrees) Angwin, CA - 13 km (8 miles) NNW (340 degrees) Calistoga, CA - 14 km (9 miles) NNE (28 degrees) Hidden Valley Lake, CA - 14 km (9 miles) SSE (160 degrees) Saint Helena, CA - 21 km (13 miles) N (352 degrees) |
| Coordinates | 38 deg. 41.4 min. N (38.689N), 122 deg. 30.2 min. W (122.503W) |
| Depth | 6.99 km (4.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=9, Nph=8, Dmin=7.3 km, Rmss=0.06 sec, Erho=0.33 km, Erzz=1.33000004 km, Gp=100 degrees |
| Event ID# | nc75306716 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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