5.8
Date-Time
Monday, January 31, 2011 at 06:03:23 UTC
Monday, January 31, 2011 at 07:03:23 PM at epicenter
Location
21.831S, 175.554W
Depth
35 km (21.7 miles)
Region
TONGA
Distances
83 km (51 miles) SSW (204) from NUKU'ALOFA, Tonga
390 km (242 miles) SSW (205) from Neiafu, Tonga
2759 km (1714 miles) WSW (256) from PAPEETE, Tahiti, French Polynesia
Location Uncertainty
horizontal +/- 18.3 km (11.4 miles); depth +/- 0.3 km (0.2 miles)
Parameters
NST=180, Nph=184, Dmin=856 km, Rmss=0.92 sec, Gp= 94,
M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp), Version=8
Source
U.S. Geological Survey, National Earthquake Information Center:
World Data Center for Seismology, Denver
Event ID
usb00016zk


David Cottle

UBB Owner & Administrator