Some parts of the west are set to experience winds that will "actually be stronger than they were during Storm Ophelia" over the weekend, according to Met Éireann.
A Status Orange wind warning is in place for a number of Atlantic coastal counties, which is to come into effect tomorrow morning.
Winds of up to 80km/h and gusts reaching 130km/h are expected in Wexford, Waterford, Cork, Kerry, Clare, Galway and Mayo.
A Status Yellow wind warning is in place for the rest of the country, with average speeds of 65km/h and gusts reaching 110km/h expected.
Meanwhile, ESB crews are working to restore power to 42 thousand homes still without electricity.
There are concerns efforts may be hampered as Storm Brian approaches and a status orange weather warning is in place.