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 9:47:43 PM (PDT) on Monday, April 5, 2021.
The magnitude 1.0 event occurred 1 km (1 miles) NW of Chester, CA.
The hypocentral depth is 11 km ( 7 miles).


Magnitude 1.0 - duration magnitude (Md)
Time Monday, April 5, 2021 at 9:47:43 PM (PDT)
Tuesday, April 6, 2021 at 4:47:43 (UTC)
Distance from Chester, CA - 1 km (1 miles) NW (312 degrees)
Greenville, CA - 32 km (20 miles) NW (308 degrees)
Quincy, CA - 49 km (30 miles) NNW (329 degrees)
East Quincy, CA - 51 km (32 miles) NW (325 degrees)
Susanville, CA - 52 km (32 miles) WSW (257 degrees)
Coordinates 40 deg. 18.9 min. N (40.314N), 121 deg. 14.6 min. W (121.243W)
Depth 10.62 km (6.6 miles)
Quality Good
Location Quality Parameters Nst=7, Nph=8, Dmin=11.2 km, Rmss=0.05 sec, Erho=0.7 km, Erzz=0.93 km, Gp=137 degrees
Event ID# nc73545940
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