Polar Vortex Forecast 2025 24. Winter 2024/2025 is about to begin (meteorologically) in a very dynamic way. 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.

The red dot indicates where winter 2025 would rank based on november 2024 values only. In contrast, a weak/disrupted polar vortex creates a weak jet stream pattern.