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 3:35:53 PM (PDT) on Monday, April 5, 2021.
The magnitude 1.1 event occurred 5 km (3 miles) SSW of Rio Dell, CA.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 1.1 - duration magnitude (Md)
Time Monday, April 5, 2021 at 3:35:53 PM (PDT)
Monday, April 5, 2021 at 22:35:53 (UTC)
Distance from Rio Dell, CA - 5 km (3 miles) SSW (197 degrees)
Hydesville, CA - 10 km (6 miles) SSW (192 degrees)
Fortuna, CA - 16 km (10 miles) S (170 degrees)
Ferndale, CA - 18 km (11 miles) SE (138 degrees)
Humboldt Hill, CA - 30 km (19 miles) S (169 degrees)
Coordinates 40 deg. 27.5 min. N (40.458N), 124 deg. 7.4 min. W (124.123W)
Depth 6.86 km (4.3 miles)
Quality Fair
Location Quality Parameters Nst=17, Nph=24, Dmin=4.5 km, Rmss=0.19 sec, Erho=0.3 km, Erzz=0.4 km, Gp=146 degrees
Event ID# nc73545855
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For more information, see https://earthquake.usgs.gov

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