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 1:52:52 PM (PDT) on Monday, September 13, 2021.
The magnitude 1.1 event occurred 5 km (3 miles) NW of Walnut Creek, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 1.1 - duration magnitude (Md)
Time Monday, September 13, 2021 at 1:52:52 PM (PDT)
Monday, September 13, 2021 at 20:52:52 (UTC)
Distance from Walnut Creek, CA - 5 km (3 miles) NW (308 degrees)
Waldon, CA - 5 km (3 miles) W (281 degrees)
Pleasant Hill, CA - 5 km (3 miles) WSW (253 degrees)
Lafayette, CA - 6 km (3 miles) N (5 degrees)
Saranap, CA - 6 km (4 miles) NNW (331 degrees)
Coordinates 37 deg. 56.1 min. N (37.935N), 122 deg. 6.7 min. W (122.112W)
Depth 8.06 km (5.0 miles)
Quality Good
Location Quality Parameters Nst=8, Nph=8, Dmin=4.0 km, Rmss=0.01 sec, Erho=0.32 km, Erzz=0.85 km, Gp=95 degrees
Event ID# nc73624506
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For more information, see https://earthquake.usgs.gov

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