There are delays of up to 30 minutes on:
Arriva Trains Wales services between Cardiff Central and Cheltenham Spa, on CrossCountry Services between Birmingham New Street and Bristol Temple Meads and First Great Western services between Worcester Shrub Hill and Bristol Temple Meads and between Worcester Shrub Hill and Swindon.
Fewer trains are able to run through the area because of vandalism at Cheltenham Spa and services are liable to alteration or cancellation.
There is no indication as to when normal service will be resumed.
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A blustery start to the day will be followed by rain as the morning progresses.
A wet and windy start for many areas, with some heavy rain at times.
Cloud will thicken and rain will strengthen in the early hours, creating a blustery night.