Snow and ice are set to sweep across large parts of the UK in a series of wintry showers.
The Met Office says people should get ready for potentially "hazardous conditions" on Tuesday evening and overnight into Wednesday morning.
Central and south west Scotland, north east England and Yorkshire are some of the affected regions.
London and areas of south east England could see snow on Thursday, forecasters say.
There will be freezing weather on Tuesday night for many people across the country with temperatures down to -2C (28.4F) to -6C degrees.
Snow is expected to accumulate over the higher ground of eastern Scotland and north east England.
With wintry showers and temperatures below zero, icy stretches may form on untreated surfaces into Wednesday morning, the Met Office said.
There is also the chance of one to three centimetres of snow accumulating to relatively low levels and up to five centimetres over the higher ground of north east Scotland.
The yellow warning will remain in place in areas of Scotland until Thursday.
Temperatures dropped below freezing for much of the country over the weekend. The coldest recorded temperature so far this autumn was -7.7C in Shap, Cumbria, on Saturday morning.
The cold air is coming from Scandinavia where people there are experiencing near-record cold November weather. Wintry showers are forming in the North Sea and will come onshore across eastern parts of the UK.
The cold weather is expected to to stick around into next week.
Maximum temperatures this week will be around 2C to 6C but it may not even get above freezing in parts of Scotland and northern England.
While snow may fall in London and south east England later this week, it is not likely to settle or cause disruption.
The UK Health Security Agency has issued a yellow cold-health alert for the health sector covering northern regions of England which runs through this week.
