The National Weather Service warned drivers in northern Arizona to use caution on Wednesday, December 28, as several inches of snow fell overnight.This footage was captured by Twitter user @Az49erGirl, who said it was filmed outside their home in Flagstaff on Wednesday morning.According to the NWS, 6.5 inches of snow was recorded at Flagstaff airport by early Wednesday. Credit: @Az49erGirl via Storyful