Polar Vortex Ohio 2025. A proper winter period is forecast to arrive within the first days of the new year. A weaker polar vortex usually means a weaker jet stream, which increases the chance of a more dynamic (colder/snowy) winter pattern over the united states, canada, and/or europe.
Signals are pointing toward a displaced polar vortex this winter, which typically contributes to a negative nao. While it wonโt bring record cold temps, it will bring our coldest air of the winter.