Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

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


Version #0: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 1:55:49 PM (PDT) on Friday, April 30, 2021.
The magnitude 1.0 event occurred 3 km (2 miles) WNW of Cobb, CA.
The hypocentral depth is 0.22 km (0.1 miles).


Magnitude 1.0 - duration magnitude (Md)
Time Friday, April 30, 2021 at 1:55:49 PM (PDT)
Friday, April 30, 2021 at 20:55:49 (UTC)
Distance from Cobb, CA - 3 km (2 miles) WNW (299 degrees)
The Geysers, CA - 6 km (4 miles) N (2 degrees)
Middletown, CA - 15 km (9 miles) NW (308 degrees)
Lower Lake, CA - 15 km (9 miles) SW (236 degrees)
Kelseyville, CA - 17 km (11 miles) SSE (155 degrees)
Coordinates 38 deg. 50.1 min. N (38.836N), 122 deg. 45.2 min. W (122.754W)
Depth 0.22 km (0.1 miles)
Quality Good
Location Quality Parameters Nst=14, Nph=14, Dmin=1.5 km, Rmss=0.05 sec, Erho=0.37 km, Erzz=0.58 km, Gp=170 degrees
Event ID# nc73556605
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