The vortex is essentially an area of low pressure in the upper layers of the atmosphere over the polar region up north. This ...

The upcoming midweek storm is one of several systems that promises to bring precipitation and eventually the month's coldest ...

Forecasters warn that a split polar vortex is set to bring a 'large supply of cold air' to North America in mid-February as a ...

A rare "daughter polar vortex" is set to plunge millions of Americans into freezing temperatures as a prolonged period of ...