Polar Vortex 2025 Effects On Weather. As you will see, the polar vortex plays by different rules in this 2025 season, helping to create one of the coldest winter months in recent years or perhaps even decades. 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.
Examples of past polar vortex events and their societal impacts, polar vortex winter 2024/2025. E stimate of the observed surface temperatures (°c;