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 3:34:30 AM (PDT) on Monday, July 17, 2023.
The magnitude 1.2 event occurred 7 km (4 miles) NW of The Geysers, CA.
The hypocentral depth is 2 km ( 1 mile).


Magnitude 1.2 - duration magnitude (Md)
Time Monday, July 17, 2023 at 3:34:30 AM (PDT)
Monday, July 17, 2023 at 10:34:30 (UTC)
Distance from The Geysers, CA - 7 km (4 miles) NW (307 degrees)
Cobb, CA - 9 km (5 miles) W (265 degrees)
Cloverdale, CA - 17 km (11 miles) E (86 degrees)
Kelseyville, CA - 18 km (11 miles) S (175 degrees)
Middletown, CA - 19 km (12 miles) WNW (291 degrees)
Coordinates 38 deg. 48.9 min. N (38.815N), 122 deg. 49.3 min. W (122.821W)
Depth 2.27 km (1.4 miles)
Quality Excellent
Location Quality Parameters Nst=33, Nph=35, Dmin=1.0 km, Rmss=0.05 sec, Erho=0.17 km, Erzz=0.28 km, Gp=46 degrees
Event ID# nc73913926
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For more information, see https://earthquake.usgs.gov

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