Polar Vortex 2025 Michigan Time. The forecasts are from the. January 2025 is about to start, and the latest forecasts show an unusually cold month developing over the united states.
A weak polar vortex occurs when the wind circulation is altered causing a wavy pattern to form in the jetstream, which allows cold air outbreaks to move south from the poles. Shading) across the northern hemisphere for 27 january 2025 and forecasted from 28 january to 11 february 2025.