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 10:01:04 PM (PDT) on Monday, July 17, 2023.
The magnitude 1.1 event occurred 2 km (2 miles) E (91 degrees) of The Geysers, CA.
The hypocentral depth is 1 km ( 1 mile).


Magnitude 1.1 - duration magnitude (Md)
Time Monday, July 17, 2023 at 10:01:04 PM (PDT)
Tuesday, July 18, 2023 at 5:01:04 (UTC)
Distance from The Geysers, CA - 2 km (2 miles) E (91 degrees)
Cobb, CA - 5 km (3 miles) S (185 degrees)
Middletown, CA - 10 km (6 miles) WNW (286 degrees)
Hidden Valley Lake, CA - 15 km (9 miles) WSW (257 degrees)
Lower Lake, CA - 18 km (11 miles) SW (215 degrees)
Coordinates 38 deg. 46.6 min. N (38.777N), 122 deg. 43.7 min. W (122.728W)
Depth 1.3 km (0.8 miles)
Quality Excellent
Location Quality Parameters Nst=30, Nph=34, Dmin=1.0 km, Rmss=0.06 sec, Erho=0.15 km, Erzz=0.2 km, Gp=57 degrees
Event ID# nc73914186
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For more information, see https://earthquake.usgs.gov

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