The jet stream has plunged central and eastern US into extreme cold weather temps. Also, Siberia has also had record breaking cold temps. On the other weather fronts, Alaska, particularly Anchorage has seen unseasonably warm temps. The Western Pacific coast of Canada and Alaska has been warmer than usual. Also, Western Europe has had a mild winter.
The world has been naturally warming over the last 18,000 years. The Arctic ice caps over Canada/US and Europe and Siberia have all melted away. The ocean has risen by 410 feet (National Geographic). There have been years when the world got warmer trends than usual and also colder trends than usual. Interesting, that when you look at a current US/Canada temperature graphic..the land mass overlaid by cold weather today looks exactly like the Laurentian Glacier area of the last ice age. Maybe todays polar vortex also fueled the Laurentian Glacier of over 18,000 years ago. The warming effect is still happening and ultimately, the Arctic will be a cool weather temperature rain forrest as it was 100 million years ago. For the many hundreds of millions of years, no one knows how to explain the earth's warming and cooling cycles. It's bizarre that politicians, entertainers, left wing activists, main stream media, etc. now have definitive, absolute answers about temperature change and they are resolute in quashing out any dissenting opinions.