Temperatures are for the next 24 hours
Met Office weather warnings have been issued as up to 10cm of snow is forecast for parts of the UK this weekend. As BBC Weather's Chris Fawkes explains, the positioning of the snow is determined by the winner of a battle between mild and cold air.
Overnight temperatures plunged to -27C in Kiev while a snowstorm in Italy and Serbia caused major disruption. BBC Weather's Sarah Keith-Lucas explains.
How the BBC Weather warnings work
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