The U.S. Is About to Get Real Cold Again. Blame It on Global Warming -- Bloomberg

Because the world is getting warmer, it's getting colder, too. Crazy as that sounds, there's an explanation in the northernmost corner of the the planet, where temperatures are rising twice as fast as anywhere else. That affects the jet streams churning through the upper atmosphere, and results in more weird winter cold snaps. ....
https://www.bloomberg.com/news/articles/2018-01-26/u-s-is-about-to-get-real-cold-again-blame-it-on-global-warming