Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California


Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 7:44:46 PM (PDT) on Thursday, September 25, 2025.
The magnitude 1.2 event occurred 14 km (9 miles) SE of Boonville, CA.
The hypocentral depth is -0.49 km (-0.30 miles).


Magnitude 1.2 - duration magnitude (Md)
Time Thursday, September 25, 2025 at 7:44:46 PM (PDT)
Friday, September 26, 2025 at 2:44:46 (UTC)
Distance from Boonville, CA - 14 km (9 miles) SE (138 degrees)
Cloverdale, CA - 24 km (15 miles) WNW (300 degrees)
Ukiah, CA - 26 km (16 miles) S (189 degrees)
Talmage, CA - 26 km (16 miles) SSW (198 degrees)
Sea Ranch, CA - 28 km (17 miles) NE (38 degrees)
Coordinates 38 deg. 54.8 min. N (38.914N), 123 deg. 15.4 min. W (123.257W)
Depth -0.49 km (-0.30 miles)
Quality Good
Location Quality Parameters Nst=23, Nph=30, Dmin=5.7 km, Rmss=0.08 sec, Erho=0.13 km, Erzz=0.51 km, Gp=71 degrees
Event ID# nc75242147
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