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 7:44:19 AM (PDT) on Thursday, July 17, 2025.
The magnitude 0.4 event occurred 4 km (3 miles) ESE of The Geysers, CA.
The hypocentral depth is 2 km ( 1 mile).


Magnitude 0.4 - duration magnitude (Md)
Time Thursday, July 17, 2025 at 7:44:19 AM (PDT)
Thursday, July 17, 2025 at 14:44:19 (UTC)
Distance from The Geysers, CA - 4 km (3 miles) ESE (118 degrees)
Cobb, CA - 7 km (4 miles) S (174 degrees)
Middletown, CA - 9 km (5 miles) W (276 degrees)
Hidden Valley Lake, CA - 15 km (9 miles) WSW (249 degrees)
Lower Lake, CA - 19 km (12 miles) SSW (208 degrees)
Coordinates 38 deg. 45.6 min. N (38.760N), 122 deg. 42.9 min. W (122.715W)
Depth 1.59 km (1.00 miles)
Quality Good
Location Quality Parameters Nst=11, Nph=13, Dmin=0.9 km, Rmss=0.02 sec, Erho=0.28 km, Erzz=0.35 km, Gp=91 degrees
Event ID# nc75211112
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