Coastline and is still continuing to rise. Its the second time that has happened in the past week alone. More than 80 Million americans are under windchill alerts through the Weekend And Beyond and in some Places Frostbite could occur in as little as ten minutes on exposed skins. Reporter the Blizzard Exits and the Arctic Air is diving south. Windchill warnings in effect for the northern and central plains for a windchill as cold as 45 degrees below zero. As that Arctic Air invades and spills south, this is some of the coldest air we have seen so far this season. And it is coming in time for the Iowa Caucus on monday. Iowans wakes up Sunday Morning to windchills as cold as 45 degrees below zero. Frostbite happening in 10 minutes or less. By Monday Evening we are still looking Add Windchills as cold as 30 degrees below zero with frostbite times at 25 minutes or less. This would be the coldest