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 2:48:55 AM (PDT) on Thursday, July 22, 2021.
The magnitude 1.4 event occurred 5 km (3 miles) E (88 degrees) of Boonville, CA.
The hypocentral depth is 4 km ( 3 miles).


Magnitude 1.4 - duration magnitude (Md)
Time Thursday, July 22, 2021 at 2:48:55 AM (PDT)
Thursday, July 22, 2021 at 9:48:55 (UTC)
Distance from Boonville, CA - 5 km (3 miles) E (88 degrees)
Ukiah, CA - 18 km (11 miles) SSW (209 degrees)
Talmage, CA - 18 km (11 miles) SW (222 degrees)
Redwood Valley, CA - 30 km (18 miles) SSW (197 degrees)
Cloverdale, CA - 34 km (21 miles) NW (312 degrees)
Coordinates 39 deg. 0.7 min. N (39.011N), 123 deg. 18.4 min. W (123.307W)
Depth 4.39 km (2.7 miles)
Quality Good
Location Quality Parameters Nst=8, Nph=8, Dmin=4.5 km, Rmss=0.03 sec, Erho=0.36 km, Erzz=0.88 km, Gp=127 degrees
Event ID# nc73597431
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For more information, see https://earthquake.usgs.gov

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