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== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Hawaiian Volcano Observatory

Version #1: This report supersedes any earlier reports of this event.
This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 3:05:14 PM (HST) on Thursday, July 12, 2012 .
The magnitude 2.3 event occurred 7 km (4 miles) W of Mauna Kea Summit.
The hypocentral depth is 20 km (12 miles).


Magnitude 2.3 - duration magnitude (Md)
Time Thursday, July 12, 2012 at 3:05:14 PM (HST)
Friday, July 13, 2012 at 1:05:14 (UTC)
Distance from Mauna Kea Summit - 7 km (4 miles) W (274 degrees)
Pohakuloa - 7 km (5 miles) N (4 degrees)
Waiki`i - 13 km (8 miles) ESE (107 degrees)
Hilo - 48 km (30 miles) WNW (283 degrees)
Coordinates 19 deg. 49.6 min. N (19.827N), 155 deg. 32.0 min. W (155.533W)
Depth 20 km (12.4 miles)
Quality Good
Location Quality Parameters Nst= 25, Nph= 25, Dmin=8 km, Rmss=0.14 sec, Erho=0.7 km, Erzz=2.1 km, Gp=108 degrees
Event ID# hv60369376
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