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 3:05:10 PM (PDT) on Monday, August 4, 2025.
The magnitude 2.5 event occurred 17 km (10 miles) SE of Mammoth Lakes, CA.
The hypocentral depth is 4 km ( 2 miles).


Magnitude 2.5 - duration magnitude (Md)
Time Monday, August 4, 2025 at 3:05:10 PM (PDT)
Monday, August 4, 2025 at 22:05:10 (UTC)
Distance from Mammoth Lakes, CA - 17 km (10 miles) SE (128 degrees)
West Bishop, CA - 39 km (24 miles) WNW (302 degrees)
Dixon Lane-Meadow Creek, CA - 40 km (25 miles) WNW (296 degrees)
Bishop, CA - 43 km (27 miles) WNW (297 degrees)
Big Pine, CA - 64 km (39 miles) NW (312 degrees)
Coordinates 37 deg. 32.6 min. N (37.543N), 118 deg. 49.7 min. W (118.829W)
Depth 4.03 km (2.50 miles)
Quality Good
Location Quality Parameters Nst=29, Nph=32, Dmin=5.2 km, Rmss=0.05 sec, Erho=0.24 km, Erzz=0.6 km, Gp=56 degrees
Event ID# nc75219207
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For more information, see https://earthquake.usgs.gov

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