Polar Vortex For 2025 Predictions. The polar vortex (pv) continues to transition to different phases or modes at breakneck speed. For the gefsv12 forecast issued on 18 december 2024, the winds at 60 degrees north (the mean location of the polar vortex) are forecast to remain stronger than normal for at.

A strong/stable polar vortex usually means strong polar circulation and jet stream. Based on the recent forecast models, the full breakdown of the polar vortex into a major sudden stratospheric warming is expected to be brief.