Polar Vortex Forecast 2 2025 Map. In the coming weeks, ushering in an abnormally cold. The next round of bitter cold was set to envelop the southern u.s.
Arctic blast tied to polar vortex puts u.s., europe in deep freeze. 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).