Current Polar Vortex Map 2025. A polar vortex could bring cold winds to much of the u.s. A weaker polar vortex usually means a weaker jet stream, which increases the chance of a more dynamic.

A weaker polar vortex usually means a weaker jet stream, which increases the chance of a more dynamic. Heavy snow falls as a person walks along route 42 in florence, kentucky, on january 6, 2025.