Polar Vortex 2025 2025. Winter 2024/2025 is about to begin (meteorologically) in a very dynamic way. A polar vortex could bring cold winds to much of the u.s.
Winters with at least one polar vortex disruption/sudden stratospheric warming (ssw) are marked with a black outline (and years with two have two circles). As the polar vortex sweeps across the u.s., electricity demand is expected to surge by 20%.