Polar Vortex Major Weather Disruption an Arctic Blast of cold air is coming and you want to prepare, even though we have a small stratospheric warming event in a few days. The Madden-Jillian Oscillation will bring and end to the warm weather. | Gina Maria Colvin Hill

What causes large outbreaks of arctic air in the United States? It's called the polar vortex, and it can plummet U.S. temperatures in the wintertime. For more on this story, visit: https://bit.ly/3LK6i7U | FOX23 Maine

A major stratospheric warming high above the Arctic is disrupting the polar vortex. And it is poised to push Arctic air into North America and Europe. Forecast models are signaling a rare, high-altitude disturbance that could significantly shift winter weather for millions over the next few weeks. A sudden stratospheric warming is unfolding, with upper-air temperatures surging by tens of degrees within days. This rapid heating is weakening the polar vortex—the fast high-altitude winds that usual