A surge of arctic air is expected Thursday morning for the four states.  Wind chills will near 30 degrees below zero by early Friday morning.  Air temperatures in Kansas and Oklahoma will fall below zero in the single digits Thursday and Friday night and strong winds will cause wind chills to reach the double digits.  

 

In addition, accumulating and blowing snow early Thursday morning with 40 to 50 mile per hour gusts may cause blowing snow and low visibility.