Polar Vortex 2025 Usa Path

Polar Vortex 2025 Usa Path. 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. Signals are pointing toward a displaced polar vortex this winter, which typically contributes to a negative nao.


Polar Vortex 2025 Usa Path

A proper winter period is forecast to arrive within the first days of the new year. Observed and forecasted (noaa gefsv12) wind speed in the polar vortex compared to the natural range of variability (faint shading).

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