Storm Dennis is set to bring major disruption to parts of the UK for a second day amid dozens of flood warnings and hundreds of cancelled flights.
Troops have been deployed to help with flood preparations in parts of West Yorkshire and some people in the Scottish Borders have evacuated their homes where severe flood warnings are in place.
Forecasters say the "perfect storm" could bring a month's rainfall in one day and some parts of the country may see up to 12cm (4.7in) with winds reaching up to 70mph (113kph).
The floods are likely to be worse than during last weekend's Storm Ciara due to rain falling on already saturated ground.
On Saturday, two bodies were pulled from rough seas before the worst of the storm hit.
One man was found following a huge search operation off Margate after an early-morning distress call, while another was found at Herne Bay.
A spokeswoman for easyJet confirmed 234 cancellations while a spokesman for British Airways said they were "merging a small number of Heathrow short-haul flights to the same destination and using larger aircraft where possible to minimise disruption".
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Ryanair said all its flights are operating as normal.
As of 7am on Sunday, there were three severe flood warnings in Scotland, meaning a danger to life. These were for Newcastleton Village in the Scottish Borders, Hawick (River Teviot) and Hawick (Slitrig).
In England and Wales there were no severe flood warnings but there were over 200 flood warnings, meaning flooding is expected and people should take immediate action.
Forecasters have issued separate weather warnings for rain and wind covering most of the UK until Monday.
This includes amber warnings over southern Scotland, northern England, Wales and part of the South West saying that flooding could cause a danger to life.
The Ministry of Defence said 75 personnel from 4th Battalion, Royal Regiment of Scotland, are working with the Environment Agency (EA) in constructing barriers and repairing flood defences in Ilkley and Calderdale, while 70 Reservists from 4th Battalion, The Yorkshire Regiment, have also been tasked with providing support where
Calderdale Council leader Tim Swift said: "The presence of army officers in Calderdale will be a reassuring sight for the many residents and businesses who are still recovering from Storm Ciara and preparing for Storm Dennis.
"Council staff, partners, volunteers and community groups have worked tirelessly all week and will continue to work around the clock for as long as necessary to help keep people safe and to manage the flood risk."