Polar Vortex 2025 Effects. Forecasters say there’s a chance the cold spell could bring with it a lobe of the polar vortex, the strong band of westerly winds that forms above the north pole every winter and. Our bloggers explain what it might mean for u.s.

Beginning next week, the polar vortex will likely trigger even colder air across the eastern half of the u.s. Recent signals indicate the possibility of a block at high latitudes, with a strengthening of geopotential height anomalies over greenland and northern europe.