Polar Vortex 2025 Forecast 2025. You can nicely see how the polar vortex is. 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 least the next 2 weeks (bold red line).

As a result, it has a harder time containing the cold air, which can now escape from the polar. Below is the polar vortex forecast image in the lower stratosphere at the 50mb pressure level (20km/12.5miles) in early january.