Polar Vortex 2024 February Forecast. For the gefsv12 forecast issued on february 12, ~90% of the individual model runs predict a reversal of the vortex winds (top, thin magenta lines), accompanied by a sharp increase in stratospheric temperature (thick. Noaa's global ensemble forecasting system (gefs for short) predicts that the northern hemisphere polar vortex will strengthen to slightly above average wind speeds in.

After a very mild fall, december will feature an abrupt transition to colder weather with much more wintry conditions leading up to the holidays than we have seen in. Noaa’s global ensemble forecasting system (gefs for short) predicts that the northern hemisphere polar vortex will strengthen to slightly above average wind speeds in.