Polar Vortex 2025 Predictions. A strong/stable polar vortex usually means strong polar circulation and jet stream. 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.

While such weather phenomena are common at times, the upcoming polar vortex. Forecasts suggest it will bring cold air to much of the u.s.