Two people are dead in Morgan County, Tenn., after a tornado swept through the area on Thursday, Feb. 6. Here's what we know so far.

The National Weather Service has released more information about two tornadoes that hit Morgan County and Grainger County Thursday night. Previous Coverage: Morgan County taking donations for those affected by deadly stormThe service sends personnel out to disaster sites after severe weather events to rate them on the F or EF scale and asses damage.

The year’s first deadly US tornado struck after dark Thursday, killing two people in a small East Tennessee community as the first of five back-to-back, jet stream-driven winter storms pummeled the eastern United States.