Power cuts, large waves and travel disruption are expected as parts of north-west and south-west England are hit by Storm Ashley.
The Met Office has issued a yellow weather warning for Sunday for high winds gusting up to 70mph (113km/h) on coasts and hills in Cumbria, which began at 03:00 BST and will last until about midnight.
A yellow rain warning is in also place across Devon and Cornwall until midday, which includes strong winds and heavy rain, with Dartmoor forecast to be among the worst affected areas.
Meteorologists said Storm Ashley, the first named storm of the season, would see a rapid drop of pressure as it moves in from the Atlantic – a phenomenon called a “weather bomb“.
The strong winds, combined with high tides, could lead to dangerous conditions, including possible delays or cancellations to travel.
The Met Office has warned of possible power cuts, minor damage to buildings and large coastal waves in Cumbria, bringing debris onto coastal roads and properties.
The warning is for wind gusts of 50-60mph (80-97km/h) inland and 60-70mph (97-113km/h) on coasts and hills.
In the south west, the Met Office said bus and train services would likely be impacted, while disruption on the roads could increase journey times.
Interruption to power supplies and other services was also likely.
People have been advised people to check road conditions and amend travel plans if necessary, while also preparing for power cuts, with torches and batteries on standby.
Electricity North West said it would “monitor the network and ensure supplies and teams are available to respond if the storm causes damage to overhead lines”.
Richard Moulton, incident manager for Electricity North West, said: “The forecast is for extremely strong winds across Cumbria and surrounding areas.”
“Our local teams are on standby and ready to respond quickly to support our customers,” he added.
Meanwhile, rail operator Northern urged customers to check their journey before travelling in the North West on Sunday.
It said crew shortages and Storm Ashley would affect travel.
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