A weather warning has been issued for Northern Ireland for snow and ice.
According to the Met Office warning, "icy surfaces are also likely to be an additional hazard, especially overnight" on Friday.
Yellow "be aware" alerts have been put on place from 8am on Thursday until 6pm on Saturday with severe weather expected to cause widespread transport disruption.
Traffic Scotland said: "Storm Caroline is expected to bring a spell of very windy weather to much of Scotland and parts of the north of Northern Ireland on Thursday".
The status yellow warning was issued today and covers the entire country from 4pm on Thursday until 4pm on Friday.
When the storm eases on Friday, a blast of freezing air from Russian Federation - dubbed the "Beast from the East" - is forecast to send temperatures plummeting to lows of -8C. Generally dry to begin with winter sunshine, but scattered rain and hail showers will start to feed down in the brisk northwest flow.
There will be potentially damaging gusts of up to 80mph there, with higher speeds possible across the Northern and Western Isles. Some short-term loss of power and other services is possible.
A Met Office spokeswoman, Nicola Maxey, said: "Winds will pick up across the rest of the country so it will be a blustery day for many areas".
"It is likely that some coastal routes, sea fronts and coastal communities will be affected by spray and/or large waves".
Winds are forecast to strengthen across parts of Britain on Wednesday ahead of the arrival of Storm Caroline.
Some 7.8in of snow could land on higher ground, with about 2in possible at lower levels.
It said that a "weather warning for snow and ice" has been issued from Thursday night.