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Southern California Earthquake Data Center

Recent Earthquakes

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 11:28:14 AM (PDT) on Thursday, May 2, 2013.
The magnitude 1.8 event occurred 15 km (9 miles) NNW of Lake Pillsbury, CA.
The hypocentral depth is 4 km ( 2 miles).




Magnitude 1.8 - duration magnitude (Md)
Time Thursday, May 2, 2013 at 11:28:14 AM (PDT)
Thursday, May 2, 2013 at 18:28:14 (UTC)
Distance from Lake Pillsbury, CA - 15 km (9 miles) NNW (334 degrees)
Willits, CA - 30 km (19 miles) ENE (64 degrees)
Alder Springs, CA - 30 km (19 miles) WSW (243 degrees)
Ukiah, CA - 45 km (28 miles) NNE (19 degrees)
Coordinates 39 deg. 31.7 min. N (39.528N), 123 deg. 2.1 min. W (123.036W)
Depth 4.1 km (2.5 miles)
Quality Good
Location Quality Parameters Nst= 22, Nph= 22, Dmin=10 km, Rmss=0.06 sec, Erho=0.2 km, Erzz=1 km, Gp=39.6 degrees
Event ID nc71984221
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