Drivers have been told to stay alert on icy roads amid a yellow weather warning as temperatures plummet to -4C ahead of ‘thundersnow’ that could wreak havoc over a freezing weekend.
Thundersnow is similar to a thunderstorm but instead of heavy rain snow falls on the ground.
There was heavy frost across Scotland in the early hours of Saturday and the rest of the UK is forecast to see low temperatures for a wet and windy weekend.
Friday night saw a Yellow Weather Warning for ice put in place…
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