The Met Office has issued an amber weather warning for snow across Lancashire.
The warning is valid from 4am until 11am on Friday (December 29).
It says that delays and cancellations to rail and travel are likely while rural communities could become cut off. Power cuts may also occur.
The weather warning currently stops short of including Preston but it is possible that may change before tomorrow morning.
More: Your pictures of snow in Preston
The Met Office chief forecaster said: “A weather system is expected to bring a spell of snow to parts of the UK on Friday. The heaviest snowfall is expected across parts of northern England where accumulations of 5-10 cm are likely, with up to 15 cm possible over higher ground.”
A yellow warning for ice is also in place across Lancashire today (December 28).
The Met Office said: “Earlier rain, sleet and snow across eastern England will clear late on Wednesday afternoon with icy patches expected to readily develop through the evening on untreated surfaces.
“Melting snow across central and southern England on Wednesday afternoon will also lead to some icy patches redeveloping overnight. Scattered wintry showers will also affect western areas which may wash off previously treated surfaces.
“1-2 cm of snow may accumulate above around 200 metres where showers do fall.”