Magnitude 8.0 - SAMOA ISLANDS REGION
2009 September 29 17:48:10 UTC
Earthquake Details
| Magnitude | 8.0 |
|---|---|
| Date-Time |
|
| 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 |
| Location Uncertainty | horizontal +/- 5.2 km (3.2 miles); depth fixed by location program |
| Parameters | NST=403, Nph=403, Dmin=>999 km, Rmss=0.97 sec, Gp= 22°, M-type=teleseismic moment magnitude (Mw), Version=V |
| Source |
|
| Event ID | us2009mdbi |
- This event has been reviewed by a seismologist.
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Earthquake Summary
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.
Tsunami Information
- NOAA West Coast & Alaska Tsunami Warning Center
- NOAA Pacific Tsunami Warning Center
- Tsunami Information Links
The earthquake locations and magnitudes cited in these NOAA tsunami bulletins are very preliminary and may be superceded by USGS locations and magnitudes computed using more extensive data sets.
Earthquake Maps
Scientific & Technical Information
Additional Information, News Reports
- Urgent Local Tsunami Warning Cancellation for Hawaii from the PTWC
- Final Tsunami Advisory for Hawaii from the PTWC
- Expanding Regional Tsunami Warning Cancellation from the PTWC
- Tsunami Information Statement from the WC/ATWC
- Tsunami warning/watch/advisory for US west coast, British Columbia, and Alaska
- Preliminary Earthquake Report
- U.S. Geological Survey, National Earthquake Information Center:
World Data Center for Seismology, Denver




