Why a sudden stratospheric warming event could change our winter

Video: Sky News YouTube · YouTube

The Polar Vortex is collapsing - and that could have dramatic consequences for the start of our winter. It is being hit by a sudden stratospheric warming event - the earliest ever recorded - a process that could end with the UK seeing freezing temperatures, and less likely, the arrival of a so-called Beast from the East. The vortex is a spinning ribbon of cold air that circulates the North Pole. Sometimes that vortex can be split or displaced when it is hit by warm air - a fairly common event later in winter. Forecasters are unsure exactly why the vortex has come under attack so early in t…

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