Polar Vortex 2024 February. Early data shows that the polar vortex is likely to be weaker than normal in the winter of 2024/2025. A weaker polar vortex usually means a weaker jet stream,.
Based on the january 15, 2024 forecast, the stratospheric polar vortex winds will decrease to zero, just reaching the threshold of a major sudden stratospheric warming, in the next. The polar vortex occasionally weakens, allowing arctic air to drift down into the united states.