There are a few things to point out about the very cold air mass coming down from Canada. First off Thursday and Friday will be the 2 cold days with temperatures not out of the 20s on Thursday and probably no higher than the upper teens and low 20s on Friday. Wind chills will be down below zero and there could be some records set in a few areas Friday morning. Most of the area records are in the low teens to near 10 above so it is certainly doable.
VERY COLD AIR FRIDAY MORNING LOWS
VERY COLD AIR FRIDAY FORECAST HIGH TEMPERATURES
The cold air is going to pull out Friday night as low pressure moves into the Ohio Valley. Given the fact that that the air ahead of this system is going to be warm. Overrunning precipitation ahead of a warm front is likely to the develop and we could see snow developing..read more at http://www.meteorologistjoecioffi.com/index.php/2016/12/12/frigid-air-snow-ice-rain-threat-friday-night/