Met Eireann has issued two wind warnings for Mayo and Galway over the coming days.
A status yellow wind warning has been issued for Mayo, Galway, Kerry and Donegal for today, with southerly winds expected, with gusts to 90 to 110km/h along coastal areas.
The warning is in place from 6am this morning to 11 pm tonight.
Meanwhile, western counties will also be hit by strong winds tomorrow, as an Atlantic storm passes close to Scotland's northern coast.
The Status Yellow wind warning is for counties Mayo, Sligo, Leitrim, Donegal, Galway, Clare and Kerry.
Northwest winds are expected to gust 100 to 110km/h, with winds strongest in coastal areas and over high ground.
The warning comes into effect at 3am tomorrow morning, and will be in place until 8pm in the evening.
The storm has been named Storm Caroline by the UK Met Office.
Scotland is expected to be hit by severe winds.
Met Éireann says Thursday will be bitterly cold overall, with gusty north to northwest breezes bringing showers over parts of Ulster, Connacht and west Munster by the afternoon.
Some of the showers will bring heavy hail, with an increasing risk of sleet and snow towards evening.
Thursday night will have scattered rain, hail and snow showers; the snow could also settle, especially in the north and northwest. Temperatures will fall to between minus 2 and plus 2 degrees, with frost and icy patches.