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 11:37:06 PM (PDT) on Wednesday, July 21, 2021.
The magnitude 0.4 event occurred 7 km (4 miles) WNW of Cobb, CA.
The hypocentral depth is 2 km ( 1 mile).


Magnitude 0.4 - duration magnitude (Md)
Time Wednesday, July 21, 2021 at 11:37:06 PM (PDT)
Thursday, July 22, 2021 at 6:37:06 (UTC)
Distance from Cobb, CA - 7 km (4 miles) WNW (282 degrees)
The Geysers, CA - 7 km (5 miles) NNW (329 degrees)
Kelseyville, CA - 16 km (10 miles) SSE (168 degrees)
Cloverdale, CA - 19 km (12 miles) E (80 degrees)
Soda Bay, CA - 19 km (12 miles) S (183 degrees)
Coordinates 38 deg. 50.1 min. N (38.834N), 122 deg. 48.1 min. W (122.801W)
Depth 1.89 km (1.2 miles)
Quality Excellent
Location Quality Parameters Nst=11, Nph=11, Dmin=1.0 km, Rmss=0.01 sec, Erho=0.31 km, Erzz=0.95 km, Gp=68 degrees
Event ID# nc73597371
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For more information, see https://earthquake.usgs.gov

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