They had to come up with a new phrase so the people who don’t pay attention think that this is something new that never happened before. All that is happening is that the jet stream will be dipping south bringing colder air. But if they say that then they can’t blame it on Gore-Bull Warming.
Ah, no. The term has been in use for over 150 years. If you are interested in the history of modern scientific meteorology I suggest you familiarize yourself with Vilhelm Bjerknes and the Bergen School.