Magnitude 8.0 - SAMOA ISLANDS REGION

2009 September 29 17:48:10 UTC

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	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 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	U.S. Geological Survey, National Earthquake Information Center: World Data Center for Seismology, Denver
Event ID	us2009mdbi

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