UK Storm, Commuters are being warned of travel disruption on Monday as a storm bringing severe gale-force winds starts moving across England and Wales.
Train companies have cancelled early-morning services, and flights into London have been reduced.
Gusts of up to 80mph (130km/h) are predicted as the weather hits the South West then moves north and eastwards and there are fears of flooding and damage.
The prime minister has chaired talks about plans to protect the public.
Meanwhile the search for a missing 14-year-old boy who was swept away by the sea in East Sussex has been stood down.
Robin Gisby, network operations managing director for Network Rail, said commuters should expect considerable disruption.
“This will impact up to Birmingham and up to Nottingham and the Midlands. If we get through this in the morning, restore the service during the afternoon and are able to start up a good service on Tuesday morning, in the circumstances I’ll be pretty pleased,” he said.