A statement on the Met Office warns: “High winds associated with Storm Arwen will bring damage and travel disruption.”
During the high winds, there are warnings of danger to life due to flying debris.
They added: “Damage to buildings and homes, with roofs blown off and power lines brought down.
“Roads, bridges and railway lines closed, with delays and cancellations to bus, train, ferry services and flights.
“Power cuts affecting other services, such as mobile phone coverage.
“Large waves and beach material being thrown onto coastal roads, sea fronts and homes.”
Follow our live blog for weather updates through out the day.