When Was The Polar Vortex In Michigan 2025. For the gefsv12 forecast issued on 18 december 2024, the winds at 60 degrees north (the mean location of the polar vortex) are forecast to remain stronger than normal for at. โ the plunging polar vortex brought subfreezing temperatures tuesday to some of the southernmost points of the u.s., threatening to dump snow on parts of.
The polar vortex lives in the upper atmosphere and is located near the. Beginning next week, the polar vortex will likely trigger even colder air across the eastern half of the u.s.