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 9:33:20 AM (PST) on Saturday, February 21, 2026.
The magnitude 1.4 event occurred 4 km (2 miles) S of Middletown, CA.
The hypocentral depth is 4 km ( 2 miles).
| Magnitude | 1.4 - duration magnitude (Md) |
| Time | Saturday, February 21, 2026 at 9:33:20 AM (PST) Saturday, February 21, 2026 at 17:33:20 (UTC) |
| Distance from |
Middletown, CA - 4 km (2 miles) S (176 degrees) Hidden Valley Lake, CA - 11 km (7 miles) SSW (205 degrees) The Geysers, CA - 14 km (9 miles) ESE (117 degrees) Cobb, CA - 15 km (9 miles) SE (140 degrees) Calistoga, CA - 16 km (10 miles) N (350 degrees) |
| Coordinates | 38 deg. 43.2 min. N (38.719N), 122 deg. 36.7 min. W (122.612W) |
| Depth | 4.07 km (2.50 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=7, Nph=7, Dmin=17.4 km, Rmss=0.31 sec, Erho=6.29 km, Erzz=20.6000004 km, Gp=230 degrees |
| Event ID# | nc75316927 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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