A Status Red wind warning has been issued for the entire country, with Storm Eoywn tracking towards Ireland.
It will come into effect at varying times on Friday morning, and will remain in place for most counties until midday.
The alert will expire in the South-east, as well as Cork, Kerry and Limerick at 10am, and Donegal at 3pm.
Met Eireann is warning of gusts of 130 kilometres per hour, and a danger to life.
Cathal Nolan, from Ireland's Weather Channel, has told Eoghan Murphy it could be the strongest storm in Irish history.