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 9:22:53 PM (PDT) on Thursday, August 14, 2025.
The magnitude 1.8 event occurred 20 km (12 miles) ESE of Boonville, CA.
The hypocentral depth is 4 km ( 3 miles).


Magnitude 1.8 - duration magnitude (Md)
Time Thursday, August 14, 2025 at 9:22:53 PM (PDT)
Friday, August 15, 2025 at 4:22:53 (UTC)
Distance from Boonville, CA - 20 km (12 miles) ESE (109 degrees)
Cloverdale, CA - 20 km (12 miles) NW (325 degrees)
Talmage, CA - 20 km (13 miles) S (175 degrees)
Lakeport, CA - 22 km (14 miles) WSW (243 degrees)
Ukiah, CA - 23 km (14 miles) SSE (166 degrees)
Coordinates 38 deg. 57.0 min. N (38.950N), 123 deg. 8.8 min. W (123.146W)
Depth 4.21 km (2.60 miles)
Quality Excellent
Location Quality Parameters Nst=12, Nph=12, Dmin=4.1 km, Rmss=0.06 sec, Erho=0.33 km, Erzz=0.639999986 km, Gp=75 degrees
Event ID# nc75223977
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For more information, see https://earthquake.usgs.gov

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