Polar Vortex 2024 California. In the lowest layer of the atmosphere, the troposphere—where weather occurs—there spins a polar vortex that circles the globe year round, a jet stream that’s. The polar vortex is a whirling cone of low pressure over the poles that's strongest in the winter months due to the increased temperature contrast between the.

Rare blizzard warnings in the southern california mountains. This is now the second disruption of the polar vortex in 2024.