These polar vortex stretches are happening more frequently as the world — and especially the Arctic — warms, a 2021 paper published in the journal Science, also co-authored by Cohen, demonstrated.

The most well-known cause is a weak polar vortex. The polar vortex is a compact area of low pressure parked in the poles. Credit: WMAZ ...

A polar vortex collapse. Now, meteorologists are calling for another collapse in the middle of March, one that could plunge the U.S., Canada, and parts of Europe into a bitterly cold spell just ...

Polar Vortex forecast from March 6 to March 20, 2025. (source: Judah Cohen, AER) Judah Cohen The stratosphere actually warms an incredible amount in a short time during these SSW’s.

The polar vortex is area of fast-moving winds well above the Earth’s surface and the jet stream that circle the Arctic during the Northern Hemisphere’s coldest months. When it’s strong, it ...