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 5:09:09 PM (PDT) on Monday, August 4, 2025.
The magnitude 1.4 event occurred 16 km (10 miles) SE of Mammoth Lakes, CA.
The hypocentral depth is 4 km ( 3 miles).


Magnitude 1.4 - duration magnitude (Md)
Time Monday, August 4, 2025 at 5:09:09 PM (PDT)
Tuesday, August 5, 2025 at 0:09:09 (UTC)
Distance from Mammoth Lakes, CA - 16 km (10 miles) SE (126 degrees)
West Bishop, CA - 39 km (24 miles) WNW (303 degrees)
Dixon Lane-Meadow Creek, CA - 41 km (25 miles) WNW (297 degrees)
Bishop, CA - 43 km (27 miles) WNW (298 degrees)
Big Pine, CA - 64 km (40 miles) NW (312 degrees)
Coordinates 37 deg. 33.0 min. N (37.549N), 118 deg. 49.7 min. W (118.829W)
Depth 4.14 km (2.60 miles)
Quality Fair
Location Quality Parameters Nst=20, Nph=22, Dmin=4.5 km, Rmss=0.04 sec, Erho=0.31 km, Erzz=0.52 km, Gp=181 degrees
Event ID# nc75219262
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For more information, see https://earthquake.usgs.gov

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