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 6:01:26 AM (PDT) on Monday, March 23, 2026.
The magnitude 2.2 event occurred 12 km (8 miles) SE of Middletown, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 2.2 - duration magnitude (Md) |
| Time | Monday, March 23, 2026 at 6:01:26 AM (PDT) Monday, March 23, 2026 at 13:01:26 (UTC) |
| Distance from |
Middletown, CA - 12 km (8 miles) SE (127 degrees) Angwin, CA - 13 km (8 miles) NNW (339 degrees) Calistoga, CA - 14 km (9 miles) NNE (29 degrees) Hidden Valley Lake, CA - 14 km (9 miles) SSE (161 degrees) Saint Helena, CA - 20 km (13 miles) N (352 degrees) |
| Coordinates | 38 deg. 41.2 min. N (38.687N), 122 deg. 30.2 min. W (122.503W) |
| Depth | 5.49 km (3.40 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=35, Nph=35, Dmin=7.6 km, Rmss=0.16 sec, Erho=0.24 km, Erzz=0.889999986 km, Gp=43 degrees |
| Event ID# | nc75331812 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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