Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California


Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 5:04:21 AM (PDT) on Sunday, September 28, 2025.
The magnitude 0.4 event occurred 12 km (7 miles) WSW of Mammoth Lakes, CA.
The hypocentral depth is 4 km ( 2 miles).


Magnitude 0.4 - duration magnitude (Md)
Time Sunday, September 28, 2025 at 5:04:21 AM (PDT)
Sunday, September 28, 2025 at 12:04:21 (UTC)
Distance from Mammoth Lakes, CA - 12 km (7 miles) WSW (243 degrees)
Yosemite Valley, CA - 46 km (28 miles) ESE (111 degrees)
Oakhurst, CA - 57 km (35 miles) ENE (59 degrees)
Ahwahnee, CA - 61 km (38 miles) ENE (66 degrees)
West Bishop, CA - 62 km (39 miles) WNW (294 degrees)
Coordinates 37 deg. 35.4 min. N (37.590N), 119 deg. 5.7 min. W (119.096W)
Depth 3.92 km (2.40 miles)
Quality Fair
Location Quality Parameters Nst=14, Nph=19, Dmin=3.4 km, Rmss=0.05 sec, Erho=0.62 km, Erzz=0.36 km, Gp=250 degrees
Event ID# nc75242922
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For more information, see https://earthquake.usgs.gov

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