Cars driving - and on the side of the road - in heavy snow in Virginia, US
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How US snow will cause more rain in UK

As the UK deals with yet more severe weather, the midwest and north-east of the US is also struggling with extreme winter conditions.

The weather system producing such severe cold in states from Virginia up to Maine is forecast to move across the Atlantic to affect the UK as well.

BBC Weather's Jay Wynne explains how the weather system changes as it moves east towards the UK.

  • 03 Jan 2014
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