Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

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


Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 1:31:18 PM (PDT) on Saturday, July 17, 2021.
The magnitude 0.8 event occurred 13 km (8 miles) ESE of Hidden Valley Lake, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 0.8 - duration magnitude (Md)
Time Saturday, July 17, 2021 at 1:31:18 PM (PDT)
Saturday, July 17, 2021 at 20:31:18 (UTC)
Distance from Hidden Valley Lake, CA - 13 km (8 miles) ESE (121 degrees)
Middletown, CA - 16 km (10 miles) E (92 degrees)
Angwin, CA - 19 km (12 miles) N (5 degrees)
Calistoga, CA - 23 km (14 miles) NE (35 degrees)
Lower Lake, CA - 24 km (15 miles) SE (139 degrees)
Coordinates 38 deg. 44.9 min. N (38.748N), 122 deg. 25.8 min. W (122.430W)
Depth 7.85 km (4.9 miles)
Quality Good
Location Quality Parameters Nst=10, Nph=12, Dmin=6.6 km, Rmss=0.17 sec, Erho=0.67 km, Erzz=1.72 km, Gp=93 degrees
Event ID# nc73594146
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For more information, see https://earthquake.usgs.gov

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