Polar Vortex 2024 March. In late march, the polar stratospheric winds returned to above 0 m/s, and forecasts show the winds staying above 0 m/s for much longer than 10 days, which means that the. Earlier this month, a sudden atmospheric warming event caused the arctic's polar vortex to reverse its trajectory.

In the northern hemisphere, this vortex consists of masses. On march 4th, leading to the reversal of the vortex.