The polar vortex is about to split in two. But what does that actually mean?

The polar vortex might mean cold weather—but it's not clear how much snow or ice that might mean.Jaymantri/Pexels
The polar vortex might mean cold weather—but it’s not clear how much snow or ice that might mean.Jaymantri/Pexels

The science behind the polar vortex is incredibly complicated, and we’ve only recently begun to understand how changes at our planet’s poles impact weather at more moderate latitudes.

Source: The polar vortex is about to split in two. But what does that actually mean?