As the National Weather Service explains, the polar vortex is an area of low pressure and cold air that exists over both of ...

The polar vortex is a “constant feature” that begins to develop sometime in September and persists through sometime in spring ...

After Feb dumped a wave of unconditionally severe winter weather in the US, March is about to unleash those conditions again due to the polar vortex collapse.

impact this polar jet stream.' 'The timing is uncertain for North America but could see a change in the pattern for late March into early April,' Pastelok added. The polar vortex always exists ...

The event could cause extreme winter weather and disrupt travel across the US and Canada - will it make it across the pond?

After a weekend of blue skies and warm sunshine, the coming week is going to be quite the shock to the system. | ITV National News ...

In essence, the polar vortex is a massive ball of rotating cold air influenced by the jet stream. A strong polar vortex is typically associated with a strong and stable jet stream. When the polar ...

While this winter wasn’t as active as some would have liked, it was still a La Nina.A La Nina is a climate pattern in which ...

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