Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 0:29:45 AM (PDT) on Monday, July 28, 2025.
The magnitude 1.0 event occurred 5 km (3 miles) SW of Calistoga, CA.
The hypocentral depth is 4 km ( 2 miles).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Monday, July 28, 2025 at 0:29:45 AM (PDT) Monday, July 28, 2025 at 7:29:45 (UTC) |
| Distance from |
Calistoga, CA - 5 km (3 miles) SW (222 degrees) Larkfield-Wikiup, CA - 12 km (7 miles) ENE (73 degrees) Santa Rosa, CA - 13 km (8 miles) NE (35 degrees) Saint Helena, CA - 14 km (9 miles) WNW (289 degrees) Angwin, CA - 15 km (9 miles) WSW (257 degrees) |
| Coordinates | 38 deg. 32.7 min. N (38.545N), 122 deg. 37.2 min. W (122.619W) |
| Depth | 4.04 km (2.50 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=34, Nph=35, Dmin=5.1 km, Rmss=0.08 sec, Erho=0.2 km, Erzz=0.45 km, Gp=49 degrees |
| Event ID# | nc75216117 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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