Deep Freeze Grips Much of US - NBC4 Washington

    Deep Freeze Grips Much of US

    Temperatures could plummet to record lows across much of the US, as a "polar vortex" brings extremely cold air and powerful winds to much of the US. Wind Chill Warnings are in effect from Montana to Alabama. (Published Monday, Jan 6, 2014) Temperatures could plummet to record lows across much of the US, as a "polar vortex" brings extremely cold air and powerful winds to much of the US. See More