In the Republic of Ireland, Met Éireann has warned that “severe, damaging and destructive winds” are expected.
The red alert there comes into effect at various times from 02:00 local time.
Speaking to RTÉ, chairman of the National Emergency Co-ordination Group said Storm Éowyn would “probably be among the severest storms” Ireland had ever seen.
An Garda Síochána (Irish police) warned all members of the public that a red severe weather warning means “shelter in place”.
Meanwhile, a yellow warning for strong wind has been issued for Northern Ireland on from 08:00 – 15:00 on Sunday.
The Met Office is expecting a further period of strong of strong winds with gusts up to 60mph (100km/h) quite widely, and up to 70mph (115km/h) around exposed coasts and hills.
