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 10:43:49 PM (PDT) on Wednesday, August 20, 2025.
The magnitude 1.6 event occurred 11 km (7 miles) ESE of Willits, CA.
The hypocentral depth is 2 km ( 2 miles).


Magnitude 1.6 - duration magnitude (Md)
Time Wednesday, August 20, 2025 at 10:43:49 PM (PDT)
Thursday, August 21, 2025 at 5:43:49 (UTC)
Distance from Willits, CA - 11 km (7 miles) ESE (121 degrees)
Redwood Valley, CA - 11 km (7 miles) NNW (342 degrees)
Brooktrails, CA - 16 km (10 miles) SE (128 degrees)
Ukiah, CA - 23 km (15 miles) N (353 degrees)
Talmage, CA - 26 km (16 miles) NNW (345 degrees)
Coordinates 39 deg. 21.4 min. N (39.357N), 123 deg. 14.6 min. W (123.243W)
Depth 2.50 km (1.60 miles)
Quality Fair
Location Quality Parameters Nst=12, Nph=11, Dmin=17.5 km, Rmss=0.03 sec, Erho=0.27 km, Erzz=7.51999998 km, Gp=83 degrees
Event ID# nc75226607
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