Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California


Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 3:50:38 PM (PDT) on Monday, July 17, 2023.
The magnitude 1.0 event occurred 13 km (8 miles) NNW of Healdsburg, CA.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 1.0 - duration magnitude (Md)
Time Monday, July 17, 2023 at 3:50:38 PM (PDT)
Monday, July 17, 2023 at 22:50:38 (UTC)
Distance from Healdsburg, CA - 13 km (8 miles) NNW (343 degrees)
Cloverdale, CA - 13 km (8 miles) SE (135 degrees)
The Geysers, CA - 15 km (9 miles) WSW (247 degrees)
Cobb, CA - 20 km (12 miles) WSW (237 degrees)
Windsor, CA - 22 km (13 miles) NNW (337 degrees)
Coordinates 38 deg. 43.5 min. N (38.726N), 122 deg. 54.9 min. W (122.915W)
Depth 7.09 km (4.4 miles)
Quality Good
Location Quality Parameters Nst=44, Nph=55, Dmin=7.7 km, Rmss=0.06 sec, Erho=0.2 km, Erzz=0.48 km, Gp=94 degrees
Event ID# nc73914091
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For more information, see https://earthquake.usgs.gov

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