Polar Vortex 2025 Forecast. A stronger and more stable polar vortex, which can limit the southward movement of arctic air. In january it was stretched polar vortex (pv) events quickly followed by a snap back to a strong pv and then the whole cycle repeating itself.
As you can see, a la niña phase has a higher chance of producing a polar vortex collapse event. The connection to our weather is through the polar vortex, which can be either strong, weak or even fully collapsed.
