5.8 Mw - TONGA

Preliminary Earthquake Report
Magnitude 5.8 Mw
Date-Time
4 Feb 2012 07:40:13 UTC
4 Feb 2012 20:40:13 near epicenter
4 Feb 2012 17:40:13 standard time in your timezone
Location 20.516S 174.022W
Depth 10 km
Distances
144 km (90 miles) ENE (61 degrees) of NUKU'ALOFA, Tonga
207 km (129 miles) S (181 degrees) of Neiafu, Tonga
460 km (286 miles) WSW (248 degrees) of Niue Island
2590 km (1609 miles) W (259 degrees) of PAPEETE, Tahiti, French Polynesia
Location Uncertainty Horizontal: 16.7 km; Vertical 4.0 km
Parameters Nph = 300; Dmin = 769.2 km; Rmss = 0.73 seconds; Gp = 46�
M-type = Mw; Version = 8
Event ID US b0007vnt


David Cottle

UBB Owner & Administrator