Glasgow is braced for snow and strong winds across the city when Storm Eunice hits.
A Met Office weather warning for snow is in place between 3am and 6pm on Friday, with most of mainland Scotland expected to be hit.
A Yellow wind warning is also in place until 6pm this evening with major disruption expected on bus, rail and ferry services.
Despite the snow forecast, ScotRail said it does not expect the same levels of disruption from Storm Eustice as from Storm Dudley but has pre-emptively announced some trains will not be running.
Glasgow and Edinburgh trains to Arbroath and Montrose to Aberdeen services will not run because sets of points on the line that allow trains to move tracks are not fitted with heaters, meaning they could freeze and get stuck.
Network Rail Scotland announced it has five locomotives fitted with snowploughs to use as required, it is proactively spraying de-icer on key junctions and extra staff will be deployed to deal with any problems.
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First Glasgow has already cancelled some services due to 'treacherous weather'. The bus operator said on Friday morning that some services returned to the depot and would not operate.
Deputy First Minister John Swinney said he chaired a meeting of the Scottish Government's resilience team and that Storm Eustice "will bring risk of snow and strong winds across most of Scotland on Friday and danger of coastal flooding in south-west Scotland".
He added: "Please follow all advice and only travel if safe to so do."
The Met Office yellow alert for Friday warns there is a chance of travel delays on roads, possibly with stranded vehicles and passengers, along with delayed or cancelled rail and air travel and a slight chance that some rural communities could be temporarily cut off.
Forecasters said there is a small chance of power cuts and that other services, such as mobile phone coverage, may be affected.
