11:00 on Thursday until 23:55 on Friday
Snow showers will affect the northwest of the UK during Thursday and Friday, although often falling as sleet and hail near windward coasts.
Ice will also form in some areas overnight. Travel delays on roads are likely, as are public transport cancellations.
In a few places, mainly upland areas, vehicles may become stranded. There is a chance of power cuts, while services such as mobile phone coverage may be affected.
A few rural communities may become cut off. In addition some roads and pavements will turn icy, increasing the chances of accidents or injuries
Chief Forecaster's assessment
Snow showers will be heaviest
and most frequent across western Scotland where a further 10-20 cm is likely to build up above 200-300 m with 30 cm possible over the very highest routes. The high ground of Northern Ireland and northern England will also see 10-15 cm building up. At low levels, parts of the warning area will see 3-7 cm of snow but some places near the west coast will see very little. Showers will be accompanied by hail and lightning at times, particularly across western Scotland.
Here, in particular, there is potential for disruption to power supplies from lightning strikes. Winds will strengthen at times, particularly from later Thursday, bringing the potential for temporary blizzard conditions and drifting on hills and mountains.