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by OldSailor on September 30, 2009

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Tsunami_Samoa_Islands_2009 A tsunami as a result of a strong underwater earthquake in the South Pacific, in Samoa islands region on September 29 killed hundreds of people in several islands. Though every tsunami is a result of an ocean floor earth quake, every underwater earthquake does not trigger a tsunami. Tsunami with 3 metre high waves was observed at Apia, Western Samoa, Pago Pago and American Samoa.

Though earthquakes and subsequent warnings on possible tsunamis are issued by international agencies, the information takes long time to reach the likely victims. As a result loss of human lives are not minimized.

It seems in Samoa initially tsunami warning was issued and later withdrawn causing confusion to the general public about tsunami.

Stay up-to-date on earthquakes and tsunamis, by subscribing to get Earthquake Notification Service and Tsunami Warnings to your email account/mobile phone.

Here are the details available on Earthquake and subsequent Tsunami warnings of the Samoa islands:

Earthquake Details issued by U.S.Geological Survey (USGS)USGS

  • Magnitude: 8.0
  • Date-Time: Tuesday, September 29, 2009 at 17:48:10 UTC; Tuesday, September 29, 2009 at 06:48:10 AM at epicenter
  • Location: 15.509°S, 172.034°W
  • Depth: 18 km (11.2 miles) set by location program
  • Region: Samoa Islands Region
  • Distances
    • 190 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

Tsunami warning issued by Pacific Tsunami Warning Center/NOAA/NWS (all times in UTC)  PTWC

  • 29 Sep 2009 18:03 Samoa Islands Region Expanding Regional Warning Pac
  • 29 Sep 2009 18:05 Samoa Islands Region Watch Statement Haw
  • 29 Sep 2009 18:54 Samoa Islands Region Expanding Regional Warning Supplement Pac
  • 29 Sep 2009 18:57 Samoa Islands Region Watch Supplement Statement Haw
  • 29 Sep 2009 20:21 Samoa Islands Region Expanding Regional Warning Supplement Pac
  • 29 Sep 2009 20:23 Samoa Islands Region Watch Cancellation Statement Haw
  • 29 Sep 2009 21:34 Samoa Islands Region Expanding Regional Warning Cancellation Pac
  • 30 Sep 2009 01:58 Samoa Islands Region Advisory Statement Haw
  • 30 Sep 2009 03:03 Samoa Islands Region Advisory Supplement Statement Haw
  • 30 Sep 2009 03:57 Samoa Islands Region Advisory Supplement Statement Haw
  • 30 Sep 2009 05:01 Samoa Islands Region Final Advisory Statement Haw

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View a video clip: Pacific Tsunami, Samoan Islands 30-09-2009 – ABC News

Read more from ITIC: 29 September 2009, Mw 8.0, Samoa Islands

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