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 9:04:59 PM (PDT) on Thursday, September 4, 2025.
The magnitude 1.5 event occurred 4 km (2 miles) ESE of Talmage, CA.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 1.5 - duration magnitude (Md)
Time Thursday, September 4, 2025 at 9:04:59 PM (PDT)
Friday, September 5, 2025 at 4:04:59 (UTC)
Distance from Talmage, CA - 4 km (2 miles) ESE (106 degrees)
Ukiah, CA - 8 km (5 miles) ESE (111 degrees)
Redwood Valley, CA - 17 km (11 miles) SSE (157 degrees)
Upper Lake, CA - 19 km (12 miles) WSW (257 degrees)
North Lakeport, CA - 20 km (12 miles) WNW (282 degrees)
Coordinates 39 deg. 7.5 min. N (39.124N), 123 deg. 7.6 min. W (123.127W)
Depth 4.66 km (2.90 miles)
Quality Excellent
Location Quality Parameters Nst=13, Nph=12, Dmin=4.4 km, Rmss=0.05 sec, Erho=0.26 km, Erzz=0.850000024 km, Gp=77 degrees
Event ID# nc75233287
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