A polar vortex collapse. Now, meteorologists are calling for another collapse in the middle of March, one that could plunge ...

Expert are warning of a polar vortex collapse in the next couple of weeks, plunging North America into freezing ...

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

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 there was a small chance of a ...

Scientists say it’s being caused by a misbehaving polar vortex combining ... south via a large dip the jet stream — the river of air over the US that storms flow through –— that also ...

The vortex describes the counter-clockwise flow of air that helps keep the colder ... but does not always, impact this polar jet stream.' 'The timing is uncertain for North America but could ...

The Met Office says there is an 80 per cent chance of sudden stratospheric warming in March, which could bring severe and ...

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 ...

Learn more about polar vortex collapse - the weather phenomenon likely to cause cold snap across much of UK in coming weeks ...

South of the Arctic’s polar vortex is the jet stream, a river of west to east air that flows five to nine miles above ground, and helps keep the pole’s cold air confined to the Arctic.