BRITS are braced for more travel chaos today after a yellow warning for fog threatens to make driving a nightmare.
Southern parts of England, East Anglia and southeast Wales will be the worst affected, according to the Met Office.
The warning, which is has been put in place from 4am to 11am today says visibility could be less than 50 metres in some areas.
There is a chance that fog patches will cause difficult driving conditions and heavy travel disruption throughout the day.
Slower journey times with delays to bus and train services are also possible.
Met Office's forecast said: "Not everywhere will experience fog, but where fog patches do develop, they are likely to become dense in some places with visibility less than 100 metres, and perhaps less than 50 metres in a few spots.
"The fog will slowly thin towards late morning but may persist into the afternoon in some areas."
A number of tips have been issued by the forecaster on how to stay safe while travelling in fog, including driving very slowly and avoiding travel if possible.
In northern England and Scotland, there may be some rain in the morning but it is expected to list in the afternoon, while the Highlands will see more rain in the late afternoon.
Most of the country is expected to see sunshine in the late evening, with southern England, Wales and Northern Ireland to see temperatures could rise to around 12C.
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However, the cloudy weather could remain in place all day, and may not lift in certain areas in the country, making the weather cold and chilly.
The fog is expected to slowly clear away on Friday, but mist and fog patches may happen in the morning.
Otherwise, this weekend will be chilly, as showers and damp weather are expected throughout the country.
Easterly winds mark a change in the weather as it will begin to get colder.
Next week, the chilly weather will continue as well with Aviemore in Scotland having a chance of seeing the first winter snow.