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 1:33:37 AM (PDT) on Friday, September 10, 2021.
The magnitude 0.8 event occurred 4 km (3 miles) ESE of The Geysers, CA.
The hypocentral depth is 1 km ( 1 mile).


Magnitude 0.8 - duration magnitude (Md)
Time Friday, September 10, 2021 at 1:33:37 AM (PDT)
Friday, September 10, 2021 at 8:33:37 (UTC)
Distance from The Geysers, CA - 4 km (3 miles) ESE (107 degrees)
Cobb, CA - 6 km (4 miles) S (170 degrees)
Middletown, CA - 8 km (5 miles) W (281 degrees)
Hidden Valley Lake, CA - 14 km (9 miles) WSW (251 degrees)
Lower Lake, CA - 18 km (11 miles) SSW (208 degrees)
Coordinates 38 deg. 46.0 min. N (38.766N), 122 deg. 42.6 min. W (122.710W)
Depth 1.32 km (0.8 miles)
Quality Good
Location Quality Parameters Nst=7, Nph=7, Dmin=1.0 km, Rmss=0.01 sec, Erho=0.7 km, Erzz=0.44 km, Gp=133 degrees
Event ID# nc73623016
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For more information, see https://earthquake.usgs.gov

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