A band of rain will arrive tonight, falling as snow on hills over about 800 feet.
Forecasters say significant accumulations are likely for a time (10-15 cm), with drifting developing in the strengthening winds.
The rain/ snow will turn increasingly patchy later in the night and tomorrow morning, but the snow level may fall closer to 500 feet for a time, before it becomes dry late morning or early afternoon.
As Storm Eunice moves across the Irish Sea through tomorrow morning wind speeds over the island are expected to increase to give gusts 60 to 70 mph, with about 75 mph possible for a time in some places.
The strongest gusts are likely in the west or northwest winds around 11am or so, before easing through the early afternoon.
Some damage and disruption will occur.
Also, at around the time of high tide (12:26 pm), large waves will break over parts of Peel promenade, bringing significant water and debris ashore.