Update - Yellow warning for snow issued across Ayrshire until Wednesday!
Frequent and heavy hail and snow showers are likely to affect many parts of Scotland and Northern Ireland from Monday evening, continuing for much of the day on Tuesday.
Travel delays on roads are possible, with a small chance of cancellations to public transport.
There is a small chance that power cuts will occur and other services, such as mobile phone coverage, may be affected. In addition some roads and pavements may become icy, increasing the chance of injuries from slips and falls.
This warning has been updated to extend its validity time into Wednesday.
Snow showers will be heaviest and most frequent across western Scotland. The largest accumulations of snow will be over high ground with over 10 cm building up above 200 metres.
At low levels, accumulations of the order 2-5 cm will be more typical. Showers will also be accompanied by hail and lightning at times, particularly across northern and western Scotland.
Here in particular there is potential for disruption to power supplies from frequent lightning strikes.
Strong winds are also expected, with the potential for temporary blizzard conditions and drifting of lying snow, particularly over high ground.