The Met Office has issued a yellow weather warning for fog affecting parts of North West England.
It is expected to last from 7pm tonight (Friday 14 January) until 11am tomorrow morning (Saturday 15 January).
Fog patches will form this evening, becoming more widespread overnight.
The Met Office says some dense fog patches are possible, with visibilities perhaps dropping to between 50 and 100 m in a few places.
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Conditions should slowly improve on Saturday (15 January), although a few areas of fog may last until afternoon across the east of the warning area.
The weather could cause impaired visibility leading to hazardous driving conditions in places, and probable slower journey times especially by road.
Delays to bus and train services are possible and there is a chance of delays or cancellations to flights.

The regions affected are:
North West
Cheshire East, Cheshire West and Chester
Wales
Wrexham
East Midlands
Derby, Derbyshire, Leicester, Leicestershire, Lincolnshire, Northamptonshire, Nottingham, Nottinghamshire and Rutland
East of England
Bedford, Cambridgeshire, Norfolk, Peterborough and Suffolk
North East England
Darlington, Durham and Stockton-on-Tees
South West England
Gloucestershire
West Midlands
Herefordshire, Shropshire, Staffordshire, Telford and Wrekin, Warwickshire, West Midlands Conurbation and Worcestershire
Yorkshire and Humber
East Riding of Yorkshire, Kingston upon Hull, North Lincolnshire, North Yorkshire, South Yorkshire, West Yorkshire and York