The polar vortex is an area of low pressure and cold air over the polar regions. When winds that keep colder air over the Arctic become less stable, cold air can dip farther south.
"It's basically extreme weather when you get that loopy jetstream."
@insideclimate
[A theme/scenario also similar from the one in movie The Day After Tomorrow, and related to this...] Ocean currents could collapse in the future [creating local
#climatechange
] Ocean currents could COLLAPSE in the future
#jetstream