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 4:06:46 AM (PDT) on Thursday, July 24, 2025.
The magnitude 1.8 event occurred 4 km (3 miles) N (5 degrees) of Boonville, CA.
The hypocentral depth is 3 km ( 2 miles).


Magnitude 1.8 - duration magnitude (Md)
Time Thursday, July 24, 2025 at 4:06:46 AM (PDT)
Thursday, July 24, 2025 at 11:06:46 (UTC)
Distance from Boonville, CA - 4 km (3 miles) N (5 degrees)
Ukiah, CA - 17 km (11 miles) SW (229 degrees)
Talmage, CA - 19 km (12 miles) WSW (240 degrees)
Redwood Valley, CA - 28 km (17 miles) SSW (209 degrees)
Sea Ranch, CA - 38 km (23 miles) NNE (12 degrees)
Coordinates 39 deg. 2.8 min. N (39.047N), 123 deg. 21.7 min. W (123.362W)
Depth 2.66 km (1.70 miles)
Quality Good
Location Quality Parameters Nst=34, Nph=36, Dmin=6.7 km, Rmss=0.07 sec, Erho=0.15 km, Erzz=0.81 km, Gp=42 degrees
Event ID# nc75214357
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