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 4:23:13 AM (PDT) on Tuesday, July 18, 2023.
The magnitude 0.5 event occurred 6 km (4 miles) NW of The Geysers, CA.
The hypocentral depth is 3 km ( 2 miles).


Magnitude 0.5 - duration magnitude (Md)
Time Tuesday, July 18, 2023 at 4:23:13 AM (PDT)
Tuesday, July 18, 2023 at 11:23:13 (UTC)
Distance from The Geysers, CA - 6 km (4 miles) NW (323 degrees)
Cobb, CA - 7 km (4 miles) W (270 degrees)
Kelseyville, CA - 18 km (11 miles) S (169 degrees)
Middletown, CA - 18 km (11 miles) WNW (296 degrees)
Cloverdale, CA - 19 km (12 miles) E (84 degrees)
Coordinates 38 deg. 49.3 min. N (38.822N), 122 deg. 48.0 min. W (122.800W)
Depth 3.28 km (2.0 miles)
Quality Excellent
Location Quality Parameters Nst=23, Nph=26, Dmin=1.7 km, Rmss=0.03 sec, Erho=0.19 km, Erzz=0.28 km, Gp=50 degrees
Event ID# nc73914261
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For more information, see https://earthquake.usgs.gov

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