Magnitude 8.0 - SAMOA ISLANDS REGION

2009 September 29 17:48:10 UTC

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Earthquake Details

Magnitude8.0
Date-Time
Location15.509°S, 172.034°W
Depth18 km (11.2 miles) set by location program
RegionSAMOA ISLANDS REGION
Distances190 km (120 miles) ENE of Hihifo, Tonga
190 km (120 miles) S of APIA, Samoa
710 km (440 miles) NNE of NUKU'ALOFA, Tonga
2700 km (1680 miles) NNE of Auckland, New Zealand
Location Uncertaintyhorizontal +/- 5.2 km (3.2 miles); depth fixed by location program
ParametersNST=403, Nph=403, Dmin=>999 km, Rmss=0.97 sec, Gp= 22°,
M-type=teleseismic moment magnitude (Mw), Version=V
Source
  • USGS NEIC (WDCS-D)
Event IDus2009mdbi
  • This event has been reviewed by a seismologist.
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Earthquake Summary

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Felt Reports

At least 110 people killed in Samoa, 22 people in American Samoa and seven people on Niuatoputapu, Tonga. Widespread damage to infrastructure at Pago Pago, American Samoa, in many parts of Samoa and on Niuatoputapu, Tonga. Felt (V) at Apia, Samoa and (IV) at Tafuna, American Samoa. Felt in much of American Samoa, Samoa and northern Tonga. Felt as far away as Wallis and Futuna Islands. A tsunami with wave heights (peak-to-trough) was recorded at: 314 cm at Pago Pago, American Samoa; 140 cm at Apia, Samoa; 47 cm at Rarotonga and 8 cm at Penrhyn, Cook Islands; 14 cm at Nuku`alofa, Tonga; 11 cm at Papeete, French Polynesia.

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