The Met Office has issued amber weather warnings for the South West and south coast for Thursday as Storm Ciaran approaches the UK.
Parts of Northern Ireland have already been flooded and people have been warned not to travel.
Met Office yellow weather warnings for rain are in place until 9am on Wednesday.
It has warned of between 25mm and 50mm of rain in places, and up to 100mm is also possible over higher ground.
Check the latest weather forecast where you are
Met Office yellow weather warnings for rain in Nothern Ireland are in place until 9am on Wednesday
Issuing the new amber warnings for the South West and the south coast, the forecasters said strong winds could disrupt travel and cause structural damage – and warned that flying debris could pose a danger to life.
Trains and planes could be delayed, while roads and bridges face potential closure.
Flooding in Northern Ireland
There were reports of flooding in Newry in Co Down on Monday after the city’s canal burst its banks, while in Dromantine, around 100 sheep were rescued after becoming stranded in a flooded field.
Met Eireann – the Irish National Meteorological Service – says spot flooding is expected in Ulster throughout the morning before clearing slowly northwards.
Earlier, an amber warning for heavy rain was in place covering counties Antrim, Down and Armagh, and was lifted at 9am on Tuesday.
Stormont’s Department for Infrastructure said police were warning people not to travel while the amber warning was in effect.
It said: “These (Met Office) warnings follow an extremely wet weekend where flooding has already occurred on many roads.
“The persistent wet conditions on saturated ground and with higher river levels – this will inevitably lead to more localised flooding. Traffic disruption is possible, and the public are being asked to consider their journeys and take extra care if travel is necessary.
“It may be necessary to close roads or put temporary restrictions in place.”
A car drives through a flooded area of the A26 outside the village of Moira in Northern Ireland
Downpours expected in parts of England and Wales
Storm Ciaran is set to bring strong winds and heavy downpours to southern parts of England and Wales – with “unsettled” conditions forecast for much of the UK.
Met Office yellow weather warnings for rain and wind are in force every day until Thursday.
Gusts of 80mph are possible along the south coast of England, with 20 to 25mm of rain expected across southern and western areas, but potentially up to 40 to 60mm over higher ground, the Met Office said.
The forecaster warned already flood-affected areas following Storm Babet could get worse.
Met Office yellow weather warnings for rain and wind on Wednesday…
…and on Thursday
Met Office meteorologist Marco Petagna said: “We’ve had various warnings in force across the UK over the last few days, and there are plenty more being issued for the next couple of days.
“The main focus in the next day or two is towards the east of Scotland and northeast England, where there is a yellow rain warning until 3am.
“There will be persistent rain up there, and then the focus for heavy showers will be across parts of southern and southeastern England and South Wales as well as parts of Northern Ireland with some heavy and sudden showers.”
Waves crashing near Whitley Bay, on the north east coast of England
He said Tuesday was expected to be still unsettled but quieter before heavy winds and longer spells of rain develop on Wednesday night into Thursday as Storm Ciaran arrives.
“There are possible gusts of 80 to 90 miles an hour in some exposed southern areas. It’s probably quite a nasty storm this one.”
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The Environment Agency has issued more than 25 flood warnings.
Kate Marks, flood duty manager at the Environment Agency, said: “We urge people to stay safe on the coast and to remember to take extreme care on coastal paths and promenades.
“Flooding of low-lying coastal roads is also possible and people must avoid driving through floodwater, as just 30cm of flowing water is enough to move your car.”
The Thames Barrier will be closed for the 209th time
Meanwhile, the Thames Barrier in London will be closed from around 10.40am on Tuesday because “a high tide” is forecast “combined with high river flows”.
It will be the flooding defence system’s 209th closure, the first of this flood season.
Is Storm Ciaran affecting an area near you?
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