Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

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


Version #0: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 10:12:13 PM (PDT) on Friday, July 18, 2025.
The magnitude 1.1 event occurred 6 km (3 miles) SE of The Geysers, CA.
The hypocentral depth is 3 km ( 2 miles).


Magnitude 1.1 - duration magnitude (Md)
Time Friday, July 18, 2025 at 10:12:13 PM (PDT)
Saturday, July 19, 2025 at 5:12:13 (UTC)
Distance from The Geysers, CA - 6 km (3 miles) SE (138 degrees)
Middletown, CA - 9 km (5 miles) W (261 degrees)
Cobb, CA - 9 km (6 miles) S (175 degrees)
Hidden Valley Lake, CA - 15 km (10 miles) WSW (241 degrees)
Healdsburg, CA - 20 km (12 miles) NE (43 degrees)
Coordinates 38 deg. 44.4 min. N (38.740N), 122 deg. 42.8 min. W (122.713W)
Depth 3.34 km (2.10 miles)
Quality Good
Location Quality Parameters Nst=12, Nph=12, Dmin=2.6 km, Rmss=0.03 sec, Erho=0.42 km, Erzz=0.649999976 km, Gp=142 degrees
Event ID# nc75211877
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For more information, see https://earthquake.usgs.gov

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