Storm Lorenzo is now making its way across the west of the country, with heavy rain and high winds expected between now and tomorrow morning.
A status yellow wind and rain warning is in place for the entire country since 9am this morning, while from six o'clock this evening, a status orange wind warning will come into effect for Galway, Mayo, Clare, Kerry and Limerick
Flooding, power outages and fallen trees are expected, with people being advised to stay away from coastal areas, where possible.
Mayo County Council has issued a level 3 alert, which means the flood emergency plan is now in operation, and arrangements are being put in place in areas of the county that may be at higher risk of flooding.
Coastal areas - including Achill, Belmullet, Newport and Westport - are at highest risk - particularly when the strongest winds coincide with high tides this evening, while there are also concerns about possible flooding in Crossmolina.
Mayo Co Co says local flood plans have been activated across the Municipal Districts in the county, and council crews will be deployed to areas where assistance is needed.