Magnitude	6.1
	Date-Time	Friday, November 12, 2004 at 06:36:16 (UTC) - Coordinated Universal Time Friday, November 12, 2004 at 03:36:16 AM local time at epicenter Time of Earthquake in other Time Zones
	Location	26.65S 63.23W
	Depth	568.0 kilometers
	Region	SANTIAGO DEL ESTERO, ARGENTINA
	Reference	160 km (100 miles) NE of Santiago del Estero, Argentina 200 km (125 miles) E of San Miguel de Tucuman, Argentina 300 km (185 miles) SE of Salta, Argentina 975 km (610 miles) NNW of BUENOS AIRES, Argentina
	Location Quality	Error estimate: horizontal +/- 7.3 km; depth fixed by location program
	Location Quality Parameters	Nst=204, Nph=204, Dmin=726.7 km, Rmss=0.77 sec, Erho=7.3 km, Erzz=0 km, Gp=45.1 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->