polar vortex collapse forecast
Definition
A meteorological prediction indicating the weakening, splitting, or breakdown of the polar vortex—a large-scale, persistent cyclone of cold air circling the Earth's poles—which often precedes extreme cold outbreaks and Arctic air plunges into lower latitudes.
In weather reporting, a forecast highlighting potential disruptions to the stratospheric polar vortex, typically leading to volatile winter weather patterns, sudden temperature drops, and heightened risks of blizzards or record lows.
Examples
The polar vortex collapse forecast has turned my heated blanket into my new best friend for the weekend.
Meteorologists issued a polar vortex collapse forecast, so now everyone's arguing over who gets the last space in the igloo.
With the polar vortex collapse forecast looming, my tropical vacation dreams melted faster than ice cream in July.
The polar vortex collapse forecast sparked a run on soup cans—because nothing says 'winter apocalypse' like canned chicken noodle.