By Allison Chinchar, CNN meteorologist17 hrs ago

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The polar vortex may be on its wayThe polar vortex may be on its way (msn.com)

The polar vortex appears to be on the move. That’s because stratospheric warming is occurring at high altitudes above the North Pole, resulting in a spike in temperatures.© CNN weather

That, in turn, could result in bitter cold air pushing southward into the United States within a couple of weeks, though where exactly that Arctic air will swoop down — and for how long — remains uncertain.

The polar vortex is simply a low pressure system that swirls cold air around the polar regions of the globe. But the system can sometimes move off the North Pole. In doing so, it releases cold air much farther south in regions such as North America and Europe.© CNN weatherForecast temperatures for January 16, 2021

The polar…