== 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 6:04:32 AM (PDT) on Tuesday, May 7, 2013.
The magnitude 1.5 event occurred 4 km (3 miles) E (95 degrees) of Saint Helena, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | |
1.5 - duration magnitude (Md) |
| Time | |
Tuesday, May 7, 2013 at 6:04:32 AM (PDT) Tuesday, May 7, 2013 at 13:04:32 (UTC) |
| Distance from | |
Saint Helena, CA - 4 km (3 miles) E (95 degrees) Angwin, CA - 8 km (5 miles) SSE (164 degrees) Yountville, CA - 12 km (8 miles) NNW (334 degrees) Santa Rosa, CA - 26 km (16 miles) ENE (75 degrees) |
| Coordinates | |
38 deg. 30.1 min. N (38.502N), 122 deg. 25.3 min. W (122.422W) |
| Depth | |
9.6 km (6.0 miles) |
| Quality | |
Good |
| Location Quality Parameters | |
Nst= 21, Nph= 21, Dmin=16 km, Rmss=0.18 sec, Erho=0.4 km, Erzz=1.5 km, Gp=64.8 degrees |
| Event ID# | |
nc71987211 |
| Additional Information | |
map || waveforms |
|
Waveforms |
For more information, see http://quake.wr.usgs.gov/
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