from docanada to mexico as the arctic air invades. windchills can be as cold as 40 degrees below zero. we have the caucus monday evening in iowa. temperatures at that time look like they'll be 10 degrees below zero. you put the clock on that for frostbite, you can get it in ten minutes or less with conditions like that. the arctic air continues to spill south. 20% of us with temperatures below zero. 80% of us below freezing. by tuesday with 200 plus records that could fall. daily highs and lows as we go through the next couple of days. all this happening in the midst of their warmest winters on record. just incredible. as the cold air punches in, it will also drop snow across the south. parts of arkansas and tennessee with winter storm warnings for 3 to 6 inches of snow as this front comes in and dumps snow in places that typically don't get it.