There's a reduced service on the First Great Western line between Bristol and London Paddington.
Trains are being diverted via Newbury, and services are suspended between Cheltenham at Paddington, with replacement buses in place between Swindon and Didcot; Swindon and Gloucester; and Bath and Swindon.
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Bristol City manager has moved to reassure club supporters and detractors. Lee Johnson remains defiant about the severity of the situation.
The latest forecast for Bristol, Somerset, Wiltshire, Gloucestershire and Dorset.
Here's the forecast for Devon, Cornwall, Somerset and Dorset.