The Met Office said Storm Caroline will pummell Scotland with 80mph winds from Thursday.
CNR International made the decision as t he Met Office predicts Thursday will see wind gusts of up to 80 miles per hour and large waves.
The wintry weather follows snow and cold temperatures experienced in parts of Scotland earlier this month.
The Met Office warned that the conditions could disrupt travel.
On Saturday the heaviest and most frequent of the snow showers will progressively become confined to northeast Scotland with strong northwest winds possibly causing drifting of the snow in places with blizzard conditions possible.
"At the moment we have a yellow weather warning in place, but it could be upgraded to amber".
Storm Caroline is forecast to arrive in the United Kingdom tomorrow, causing gale winds, snow and freezing temperatures.
Met Éireann says scattered snow showers will occur from late Thursday and into Friday.More news: Pizza Hut tests beer and wine delivery
There will be potentially damaging gusts of up to 80mph there, with higher speeds possible across the Northern and Western Isles.
Some roads and railways likely to be affected with longer journey times by road, bus and for train services. Some short term loss of power and other services is possible.
Coastal routes, seafronts and coastal communities are likely to be affected by spray or large waves.
Winds are forecast to strengthen across parts of Britain on Wednesday ahead of the arrival of Storm Caroline.
The easterly winds often freeze Britain for a week or more, with ice and snow flurries plus more widespread snow dumps when moist Atlantic fronts hit the cold air.
John Eagleton is a forecaster with Met Éireann.
It will take effect from 4pm tomorrow, with snow expected on higher ground in the Midlands.