USA Today

Research Scientist Judah Cohen speaks with USA Today reporter Doyle Rice about how the polar vortex and cold Siberian air could weather across the U.S. in February. Cohen noted that some of the cold weather being felt on the East Coast of the U.S. is "coming from Siberia and that is contributing to the extremity of the cold since Siberia is the source of the coldest air of the Northern Hemisphere in winter.”