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 10:43:57 AM (PDT) on Monday, July 17, 2023.
The magnitude 2.7 event occurred 10 km (6 miles) SE of Chester, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 2.7 - duration magnitude (Md)
Time Monday, July 17, 2023 at 10:43:57 AM (PDT)
Monday, July 17, 2023 at 17:43:57 (UTC)
Distance from Chester, CA - 10 km (6 miles) SE (144 degrees)
Greenville, CA - 21 km (13 miles) WNW (301 degrees)
Quincy, CA - 38 km (24 miles) NNW (331 degrees)
East Quincy, CA - 40 km (25 miles) NW (326 degrees)
Susanville, CA - 48 km (30 miles) WSW (245 degrees)
Coordinates 40 deg. 14.1 min. N (40.235N), 121 deg. 9.8 min. W (121.163W)
Depth 6.2 km (3.9 miles)
Quality Good
Location Quality Parameters Nst=32, Nph=33, Dmin=2.1 km, Rmss=0.16 sec, Erho=0.33 km, Erzz=0.37 km, Gp=37 degrees
Event ID# nc73914016
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For more information, see https://earthquake.usgs.gov

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