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 7:31:40 AM (PDT) on Sunday, September 12, 2021.
The magnitude 1.0 event occurred 4 km (3 miles) NW of The Geysers, CA.
The hypocentral depth is 0.49 km (0.3 miles).


Magnitude 1.0 - duration magnitude (Md)
Time Sunday, September 12, 2021 at 7:31:40 AM (PDT)
Sunday, September 12, 2021 at 14:31:40 (UTC)
Distance from The Geysers, CA - 4 km (3 miles) NW (314 degrees)
Cobb, CA - 6 km (4 miles) WSW (252 degrees)
Middletown, CA - 16 km (10 miles) WNW (291 degrees)
Cloverdale, CA - 19 km (12 miles) E (90 degrees)
Kelseyville, CA - 20 km (12 miles) SSE (168 degrees)
Coordinates 38 deg. 48.3 min. N (38.805N), 122 deg. 47.6 min. W (122.793W)
Depth 0.49 km (0.3 miles)
Quality Excellent
Location Quality Parameters Nst=21, Nph=20, Dmin=0.4 km, Rmss=0.04 sec, Erho=0.19 km, Erzz=0.32 km, Gp=49 degrees
Event ID# nc73624031
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For more information, see https://earthquake.usgs.gov

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