[link to earthquake.usgs.gov]

Magnitude 6.4
Date-Time Thursday, March 31, 2011 at 00:11:59 UTC
Thursday, March 31, 2011 at 12:11:59 PM at epicenter
Time of Earthquake in other Time Zones

Location 16.566°S, 177.493°W
Depth 23.7 km (14.7 miles)
Region FIJI REGION
Distances 438 km (272 miles) WNW (301°) from Neiafu, Tonga
562 km (350 miles) NNW (335°) from NUKU'ALOFA, Tonga
2968 km (1844 miles) W (268°) from PAPEETE, Tahiti, French Polynesia

Location Uncertainty horizontal +/- 18.5 km (11.5 miles); depth +/- 3.3 km (2.1 miles)
Parameters NST=311, Nph=314, Dmin=492 km, Rmss=1.27 sec, Gp=108°,
M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp), Version=D