Scotland and Northern Ireland are set for "significant accumulations" of snow as the disruption promised by Storm Caroline begins.
Rail and ferry services are cancelled and dozens of schools are closed as the storm approaches.
United Kingdom weather: Storm Caroline could put 'lives at risk,' Met Office warns, as gales of up to 90mph set to hit UK
Severe gales are due to hit parts of the UK today as Storm Caroline arrives - with forecasters warning of a danger to life amid "devastating" gusts in some areas.
Storm Caroline weather: Live updates as Britain hit by 90mph winds and rail disruption before SNOW and ice
Forecasters have issued a number of weather warnings for much of the country
The Met Office issues yellow "be aware" warnings and says road, air and rail disruption could follow.
Three weather warnings have been issued by the Met Office as Storm Caroline prepares to batter Northern Ireland.