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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 event has been reviewed by a seismic analyst.

A micro earthquake occurred at 10:19:48 AM (HST) on Tuesday, July 31, 2012 .
The magnitude 2.8 event occurred 9 km (6 miles) WNW of Ka`ena Point.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 2.8 - local magnitude (Ml)
Time Tuesday, July 31, 2012 at 10:19:48 AM (HST)
Tuesday, July 31, 2012 at 20:19:48 (UTC)
Distance from Ka`ena Point - 9 km (6 miles) WNW (287 degrees)
Kilauea Summit - 14 km (9 miles) SSE (155 degrees)
Pu`u `O`o Crater - 15 km (10 miles) SW (228 degrees)
Hilo - 50 km (31 miles) SSW (196 degrees)
Coordinates 19 deg. 18.0 min. N (19.300N), 155 deg. 13.1 min. W (155.218W)
Depth 6.8 km (4.2 miles)
Quality Good
Location Quality Parameters Nst= 22, Nph= 22, Dmin=2 km, Rmss=0.1 sec, Erho=0.5 km, Erzz=1.3 km, Gp=100.8 degrees
Event ID# hv60232778
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