HEAVY snow is forecast for Croydon today (Friday), with the council advising residents to leave their cars at home.
In a statement, a spokesman said people should check the detailed forecast before setting out for work.
"It the worst of the forecast does hit, then conditions may get bad very quickly," he added.
"Car users are being advised to leave their vehicles at home... as road travel may become very difficult later in the afternoon."
Forecasters are warning the snow, due to begin in Croydon about 8am, could continue until early tomorrow morning with little or no respite.
This could lead to drifting in places, with accumulations of up to 10cm.
No school closures are planned, but parents can check the latest situation on the OpenCheck website
Southern are running a revised train timetable, and live updates are showing services as 'delayed' with no further information.
Transport for London said the tramlink is running as normal, but advised people to check before they travel.
Croydon Council staff were due to start gritting priority roads and pavements from 5am, with a list available online here.
There are 600 roadside bins containing salt, but the spokesman stressed the grit is for drivers to use on nearby roads and not for people to take away and use on their own property.
Business owners thinking of closing early are asked to stagger the times they allow staff to go, with those living furthest away leaving first.
"We'd also call on people to look out for their neighbours - if they are elderly or vulnerable then check to see if they need any help," said Councillor Phil Thomas, cabinet member for highways and environmental services.
"Any disruption to council services and schools will be published on the council website."
