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 8:17:17 AM (PDT) on Wednesday, April 7, 2021.
The magnitude 2.5 event occurred 6 km (4 miles) S of Calistoga, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 2.5 - local magnitude (Ml)
Time Wednesday, April 7, 2021 at 8:17:17 AM (PDT)
Wednesday, April 7, 2021 at 15:17:17 (UTC)
Distance from Calistoga, CA - 6 km (4 miles) S (183 degrees)
Saint Helena, CA - 10 km (6 miles) WNW (282 degrees)
Santa Rosa, CA - 13 km (8 miles) NE (52 degrees)
Kenwood, CA - 13 km (8 miles) NNW (345 degrees)
Angwin, CA - 13 km (8 miles) WSW (243 degrees)
Coordinates 38 deg. 31.4 min. N (38.523N), 122 deg. 35.0 min. W (122.583W)
Depth 9.21 km (5.7 miles)
Quality Good
Location Quality Parameters Nst=78, Nph=58, Dmin=7.5 km, Rmss=0.41 sec, Erho=1 km, Erzz=4.2 km, Gp=37 degrees
Event ID# nc73546375
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For more information, see https://earthquake.usgs.gov

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