Magnitude	4.9
	Date-Time	Monday, October 11, 2004 at 22:41:38 (UTC) - Coordinated Universal Time Tuesday, October 12, 2004 at 06:41:38 AM local time at epicenter Time of Earthquake in other Time Zones
	Location	45.89N 96.42E
	Depth	10 kilometers
	Region	WESTERN MONGOLIA
	Reference	205 km (125 miles) S of Uliastay, Mongolia 215 km (135 miles) NW of Bayan-Ondor, Mongolia 415 km (260 miles) WSW of Tsetserleg, Mongolia 825 km (510 miles) WSW of ULAANBAATAR, Mongolia
	Location Quality	Error estimate: horizontal +/- 7.9 km; depth +/- 20.1 km
	Location Quality Parameters	Nst=111, Nph=111, Dmin=790.1 km, Rmss=0.80 sec, Erho=7.9 km, Erzz=20.1 km, Gp=71.3 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->