Arriva Trains Wales has announced amended timetables in preparation for Storm Callum, which is forecast to bring heavy rain and wind to western parts of the UK from 12 October.
The Aberystwyth-Machynlleth-Newtown-Shrewsbury line will be completely shut from 1000 Friday until the start of service Monday, 15 October due to the threat of severe flooding caused by ‘extreme rainfall’.
In addition, no trains will operate between Swansea and Carmarthen between 0700 and 1100 and after 1900 due to a flood warning relating to strong winds and coastal tides. A limited bus replacement service will be in operation, but customers are advised not to travel unless necessary.
There will also be no trains between Blaenau Ffestiniog and Llandudno Junction on Friday or Saturday, and there are several cancellations on the Machynlleth-Tywyn-Barmouth-Harlech-Pwllheli line.
Network Rail Scotland has said it will continue to monitor the storm and will announce any timetable alterations as and when necessary.
Meanwhile, Virgin Trains says it is expecting disruption and has relaxed ticket restrictions to allow passengers to travel earlier or later on 12 October, or get a full refund at point of purchase.
Cardiff airport has experienced some cancellations this morning, with further disruption likely throughout the day.
Shannon airport in Ireland has said that while it has not been advised of any alterations to its schedule, passengers should check with their airline on the status of their flight, as Storm Callum may bring last-minute disruption.
As with all severe weather, travellers are advised to monitor the status of any travel arrangements throughout the storm.