Magnitude 8.0 - SAMOA ISLANDS REGION

2009 September 29 17:48:10 UTC

Earthquake Details

Magnitude8.0
Date-Time
  • Tuesday, September 29, 2009 at 17:48:10 UTC
  • Tuesday, September 29, 2009 at 06:48:10 AM at epicenter
Location15.509°S, 172.034°W
Depth18 km (11.2 miles) set by location program
RegionSAMOA ISLANDS REGION
Distances
  • 193 km (120 miles) S (189°) from APIA, Samoa
  • 199 km (124 miles) SW (226°) from PAGO PAGO, American Samoa
  • 406 km (252 miles) NNE (31°) from Neiafu, Tonga
  • 2404 km (1494 miles) W (272°) from PAPEETE, Tahiti, French Polynesia
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
Event IDus2009mdbi
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