Winter isn't over just yet. A major shift in the weather pattern could have millions across the United States once again ...

The polar vortex that has dealt the most brutal winter to much of the US in recent years is about to be broken down – but not ...

A late cold snap could affect the UK, due to a polar vortex collapse that is likely to cause extreme winter conditions across ...

During the winter, the polar vortex can strengthen and weaken - and even reverse direction - which has effects on the weather ...