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 7:58:28 PM (PDT) on Thursday, March 27, 2025.
The magnitude 0.9 event occurred 12 km (8 miles) ESE of Middletown, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 0.9 - duration magnitude (Md) |
| Time | Thursday, March 27, 2025 at 7:58:28 PM (PDT) Friday, March 28, 2025 at 2:58:28 (UTC) |
| Distance from |
Middletown, CA - 12 km (8 miles) ESE (123 degrees) Angwin, CA - 14 km (8 miles) NNW (343 degrees) Hidden Valley Lake, CA - 14 km (9 miles) SSE (157 degrees) Calistoga, CA - 15 km (9 miles) NNE (30 degrees) Saint Helena, CA - 21 km (13 miles) N (354 degrees) |
| Coordinates | 38 deg. 41.5 min. N (38.692N), 122 deg. 29.8 min. W (122.496W) |
| Depth | 6.46 km (4.00 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=14, Nph=16, Dmin=7.5 km, Rmss=0.06 sec, Erho=0.24 km, Erzz=0.81 km, Gp=58 degrees |
| Event ID# | nc75156482 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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