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 9:44:55 AM (PDT) on Friday, August 28, 2026.
The magnitude 1.9 event occurred 13 km (8 miles) SE of Hidden Valley Lake, CA.
The hypocentral depth is 1 km ( 1 mile).
| Magnitude | 1.9 - duration magnitude (Md) |
| Time | Friday, August 28, 2026 at 9:44:55 AM (PDT) Friday, August 28, 2026 at 16:44:55 (UTC) |
| Distance from |
Hidden Valley Lake, CA - 13 km (8 miles) SE (124 degrees) Middletown, CA - 16 km (10 miles) E (94 degrees) Angwin, CA - 19 km (12 miles) N (4 degrees) Calistoga, CA - 22 km (14 miles) NE (35 degrees) Lower Lake, CA - 24 km (15 miles) SE (141 degrees) |
| Coordinates | 38 deg. 44.5 min. N (38.742N), 122 deg. 26.0 min. W (122.433W) |
| Depth | 1.12 km (0.70 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=23, Nph=23, Dmin=7.2 km, Rmss=0.23 sec, Erho=0.38 km, Erzz=2.43000007 km, Gp=54 degrees |
| Event ID# | nc75426377 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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