What happens in #polarvortex often precedes what happens at the surface. Big cool down predicted for the Eastern US end of Dec to early Jan. pic.twitter.com/OKZuYkB6BY— Judah Cohen (@judah47) December 21, 2016
What happens in #polarvortex often precedes what happens at the surface. Big cool down predicted for the Eastern US end of Dec to early Jan. pic.twitter.com/OKZuYkB6BY