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Earthquake Hazards Program

 

Magnitude 6.9 - SAMOA ISLANDS REGION

2006 September 28 06:22:09 UTC

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Earthquake Details

Magnitude 6.9
Date-Time
  • Thursday, September 28, 2006 at 06:22:09 (UTC)
    = Coordinated Universal Time
  • Wednesday, September 27, 2006 at 7:22:09 PM
    = local time at epicenter
  • Time of Earthquake in other Time Zones
    Location 16.613°S, 172.035°W
    Depth 28 km (17.4 miles) set by location program
    Region SAMOA ISLANDS REGION
    Distances 195 km (120 miles) ESE of Hihifo, Tonga
    290 km (180 miles) SSW of PAGO PAGO, American Samoa
    605 km (375 miles) NE of NUKU'ALOFA, Tonga
    2595 km (1610 miles) NNE of Auckland, New Zealand
    Location Uncertainty horizontal +/- 5.1 km (3.2 miles); depth fixed by location program
    Parameters Nst=292, Nph=292, Dmin=300.2 km, Rmss=0.89 sec, Gp= 22°,
    M-type=teleseismic moment magnitude (Mw), Version=S
    Source USGS NEIC (WDCS-D)
    Event ID usteaj
    • This event has been reviewed by a seismologist.
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    Earthquake Summary

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  • The following is a release by the United States Geological Survey, National Earthquake Information Center: A strong earthquake occurred 195 km (120 miles) ESE of Hihifo, Tonga. 290 km (180 miles) SSW of PAGO PAGO, American Samoa. 610 km (380 miles) NE of NUKU'ALOFA, Tonga at 12:22 AM MDT, Sep 28, 2006 (Sep 27 at 7:22 PM local time in Samoa Islands Region). The magnitude and location may be revised when additional data and further analysis results are available. There have been no reports of damage.
  • Felt Reports

    Felt (IV) at Alofi and (III) at Tamakautoga, Niue. Felt (III) at Apia. Also felt (III) at Neiafu, Tonga. A tsunami with a wave height of 16 cm (peak-to-trough) was recorded at Pago Pago, American Samoa.

    Tsunami Information Tsunami Information


    • Preliminary Earthquake Report
    • U.S. Geological Survey, National Earthquake Information Center
      World Data Center for Seismology, Denver

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