Polar Vortex February 2025 Map Usa. The forecasted structure of the tropospheric jet stream (yellow) and several levels of the stratospheric polar vortex from the lower stratosphere to the upper stratosphere in the. Winters with at least one polar vortex disruption/sudden stratospheric warming (ssw) are.

A polar vortex dipping down from siberia is bringing a cold front with frigid temperatures to millions americans. The jet stream typically acts as a barrier to keep the polar vortex contained near the arctic, but at times, some of the vortex can break off or move south, bringing unusually.