Polar Vortex 2025 Predictions Map. New cold season, new polar vortex A strong/stable polar vortex usually means strong polar circulation and jet stream.
Relative stability and blocks at high latitudes the dynamics of the polar vortex continue to show alternating episodes of stretching and relaxation, typical of this season. The strongest polar vortex years (dark purple dots) cluster in the upper left quadrant of the graph, meaning winters with westerly qbo and la nina.