Magnitude	4.9
	Date-Time	Tuesday, September 28, 2004 at 13:39:50 (UTC) - Coordinated Universal Time Tuesday, September 28, 2004 at 12:39:50 PM local time at epicenter Time of Earthquake in other Time Zones
	Location	12.83S 14.68W
	Depth	10 kilometers
	Region	SOUTHERN MID-ATLANTIC RIDGE
	Reference	540 km (335 miles) S of Ascension Island 2580 km (1600 miles) SW of ACCRA, Ghana
	Location Quality	Error estimate: horizontal +/- 10.1 km; depth fixed by location program
	Location Quality Parameters	Nst=44, Nph=44, Dmin=2359.1 km, Rmss=0.99 sec, Erho=10.1 km, Erzz=0 km, Gp=64.6 degrees
	Source	USGS NEIC (WDCS-D)

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NB: The official magnitude for this earthquake is indicated at the top of this page. This was the best available estimate of the earthquake's size, at the time that this page was created. Other magnitudes associated with web pages linked from here are those determined at various times following the earthquake with different types of seismic data. Although, given the data used, they are legitimate estimates of magnitude they are not considered the official magnitude.

The region name is an automatically generated name from the Flinn-Engdahl (F-E) seismic and geographical regionalization scheme. The boundaries of these regions are defined at one-degree intervals and therefore differ from irregular political boundaries. More->