== 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 3:59:18 AM (PDT) on Saturday, May 4, 2013.
The magnitude 1.0 event occurred 16 km (10 miles) WNW of Portola, CA.
The hypocentral depth is 9 km ( 5 miles).
| Magnitude | |
1.0 - duration magnitude (Md) |
| Time | |
Saturday, May 4, 2013 at 3:59:18 AM (PDT) Saturday, May 4, 2013 at 10:59:18 (UTC) |
| Distance from | |
Portola, CA - 16 km (10 miles) WNW (300 degrees) Quincy, CA - 27 km (17 miles) ESE (102 degrees) Greenville, CA - 39 km (24 miles) SE (136 degrees) Susanville, CA - 59 km (37 miles) S (178 degrees) |
| Coordinates | |
39 deg. 53.0 min. N (39.884N), 120 deg. 37.9 min. W (120.632W) |
| Depth | |
8.7 km (5.4 miles) |
| Quality | |
Good |
| Location Quality Parameters | |
Nst= 14, Nph= 14, Dmin=9 km, Rmss=0.05 sec, Erho=0.4 km, Erzz=0.8 km, Gp=104.4 degrees |
| Event ID# | |
nc71985236 |
| Additional Information | |
map || waveforms |
For more information, see http://quake.wr.usgs.gov/
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