Magnitude : 6.3
Date-Time : Monday, February 21, 2011 at 23:51:43 UTC
Tuesday, February 22, 2011 at 12:51:43 PM at epicenter
Location : 43.600°S, 172.710°E
Depth : 5 km (3.1 miles)
Region : SOUTH ISLAND OF NEW ZEALAND
Distances : NEAR Christchurch, New Zealand
225 km (140 miles) SSE of Westport, New Zealand
305 km (190 miles) SSW of WELLINGTON, New Zealand
310 km (190 miles) NE of Dunedin, New Zealand
225 km (140 miles) SSE of Westport, New Zealand
305 km (190 miles) SSW of WELLINGTON, New Zealand
310 km (190 miles) NE of Dunedin, New Zealand
Location Uncertainty : horizontal +/- 12.2 km (7.6 miles); depth +/- 0.6 km (0.4 miles)
Parameters : Nph= 0, Dmin=0 km, Rmss=0.98 sec, Gp= 0,
M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp),
M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp),
Version=D (Institute of Geological and Nuclear Sciences, Lower Hutt, New Zealand)
FIG: Instrumental Intensity (USGS Shakemap)