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 8:10:07 PM (PDT) on Tuesday, April 6, 2021.
The magnitude 1.2 event occurred 10 km (6 miles) ESE of Hidden Valley Lake, CA.
The hypocentral depth is 10 km ( 6 miles).


Magnitude 1.2 - duration magnitude (Md)
Time Tuesday, April 6, 2021 at 8:10:07 PM (PDT)
Wednesday, April 7, 2021 at 3:10:07 (UTC)
Distance from Hidden Valley Lake, CA - 10 km (6 miles) ESE (102 degrees)
Middletown, CA - 15 km (9 miles) ENE (74 degrees)
Lower Lake, CA - 20 km (12 miles) SE (134 degrees)
Cobb, CA - 24 km (15 miles) E (99 degrees)
Angwin, CA - 24 km (15 miles) N (1 degrees)
Coordinates 38 deg. 47.3 min. N (38.789N), 122 deg. 26.8 min. W (122.446W)
Depth 9.77 km (6.1 miles)
Quality Good
Location Quality Parameters Nst=21, Nph=27, Dmin=1.9 km, Rmss=0.12 sec, Erho=0.28 km, Erzz=0.61 km, Gp=102 degrees
Event ID# nc73546140
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For more information, see https://earthquake.usgs.gov

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