Polar Vortex 2025 Meaning. The beginning of 2025 will be marked by the year’s first polar vortex, bringing snow, storms, and frigid temperatures that will impact the majority of the country and millions of americans. Tropospheric polar vortex occurs at the lowest layer of the atmosphere — it extends from the surface up to about 10 km to 15 km — where most weather phenomena occur.
A strong/stable polar vortex usually means strong polar circulation and jet stream. The polar vortex is a broad area of low pressure high in the atmosphere above the arctic that strengthens in the winter and.