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 11:24:53 PM (PDT) on Tuesday, October 12, 2021.
The magnitude 0.9 event occurred 2 km (1 miles) ENE (74 degrees) of The Geysers, CA.
The hypocentral depth is -1 km (-0.5 miles).


Magnitude 0.9 - duration magnitude (Md)
Time Tuesday, October 12, 2021 at 11:24:53 PM (PDT)
Wednesday, October 13, 2021 at 6:24:53 (UTC)
Distance from The Geysers, CA - 2 km (1 miles) ENE (74 degrees)
Cobb, CA - 5 km (3 miles) SSW (197 degrees)
Middletown, CA - 11 km (7 miles) WNW (287 degrees)
Hidden Valley Lake, CA - 16 km (10 miles) W (259 degrees)
Lower Lake, CA - 18 km (11 miles) SW (218 degrees)
Coordinates 38 deg. 46.9 min. N (38.781N), 122 deg. 44.3 min. W (122.739W)
Depth -0.83 km (-0.5 miles)
Quality Fair
Location Quality Parameters Nst=9, Nph=9, Dmin=0.3 km, Rmss=0.34 sec, Erho=1.01 km, Erzz=1.62 km, Gp=94 degrees
Event ID# nc73638970
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