Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

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


Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 8:51:28 AM (PDT) on Monday, July 17, 2023.
The magnitude 1.9 event occurred 22 km (14 miles) NE (53 degrees) of East Foothills, CA.
The hypocentral depth is 7 km ( 5 miles).


Magnitude 1.9 - duration magnitude (Md)
Time Monday, July 17, 2023 at 8:51:28 AM (PDT)
Monday, July 17, 2023 at 15:51:28 (UTC)
Distance from East Foothills, CA - 22 km (14 miles) NE (53 degrees)
Alum Rock, CA - 23 km (15 miles) NE (51 degrees)
Livermore, CA - 24 km (15 miles) SSE (147 degrees)
Milpitas, CA - 26 km (16 miles) ENE (73 degrees)
Pleasanton, CA - 29 km (18 miles) SE (129 degrees)
Coordinates 37 deg. 30.0 min. N (37.499N), 121 deg. 37.2 min. W (121.621W)
Depth 7.37 km (4.6 miles)
Quality Excellent
Location Quality Parameters Nst=36, Nph=40, Dmin=3.7 km, Rmss=0.07 sec, Erho=0.15 km, Erzz=0.39 km, Gp=78 degrees
Event ID# nc73913971
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For more information, see https://earthquake.usgs.gov

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