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 4:16:08 AM (PDT) on Saturday, July 26, 2025.
The magnitude 0.9 event occurred 4 km (2 miles) NE (51 degrees) of Middletown, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 0.9 - duration magnitude (Md)
Time Saturday, July 26, 2025 at 4:16:08 AM (PDT)
Saturday, July 26, 2025 at 11:16:08 (UTC)
Distance from Middletown, CA - 4 km (2 miles) NE (51 degrees)
Hidden Valley Lake, CA - 4 km (3 miles) SSW (206 degrees)
Cobb, CA - 14 km (8 miles) ESE (113 degrees)
The Geysers, CA - 15 km (10 miles) E (91 degrees)
Lower Lake, CA - 15 km (10 miles) S (170 degrees)
Coordinates 38 deg. 46.5 min. N (38.775N), 122 deg. 34.8 min. W (122.579W)
Depth 7.93 km (4.90 miles)
Quality Good
Location Quality Parameters Nst=29, Nph=30, Dmin=4.2 km, Rmss=0.07 sec, Erho=0.21 km, Erzz=0.46 km, Gp=93 degrees
Event ID# nc75215267
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