Polar Vortex Forecast Update Today 2025. For the gefsv12 forecast issued on december 1, the winds at 60 degrees north (the mean location of the polar vortex) are forecast to remain stronger than normal for at least. 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.
In the coming weeks, ushering in an abnormally cold start to 2025. Based on the recent forecast models, the full breakdown of the polar vortex into a major sudden stratospheric warming is expected to be brief.