Storm Eleanor is the fifth named storm of the season, set to batter parts of Britain with up to 80mph gusts and heavy downpours.
A double severe yellow weather warning has been issued for Tuesday and Wednesday as the potent deep area of low pressure approaches from the Atlantic.
Motorists have been warned to avoid driving through flood water while people around coastlines are urged to take extreme care with large waves and flying debris expected.
The system of naming storms was first started by the US, and soon after the UK decided to follow suit.
The Met Office and Met Eireann launched the scheme in 2015 to name storms as part of efforts to raise awareness of extreme weather events in the UK and Ireland.
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As well as to prompt people to take action to prevent harm to themselves and their property.
Names are voted in by the UK public and are then narrowed down to the most popular monikers by the Met Office and Met Eireann and put in alphabetical order.
Previous names used have included Abigail and Barney in 2015-16 and Conor and Holly in 2016-2017.
Storm Aileen was the first named storm of the 2017-18 season, bringing strong winds, heavy rain and disruption to roads and railways, followed by Storm Brian in October.
A weather system becomes a named storm when it is classified as having the potential to cause a significant impact in the UK and/or Ireland, either possessing an amber, 'be prepared', or red, 'take action', warning.
Other weather types are also taken into consideration, specifically heavy rain that could lead to the impact of flooding, and are advised by the Natural Resources Wales flood warnings, Environment Agency and SEPA.
Whether a storm is considered large enough to be given its own name comes down to the likely impact of a storm.
The latest storm-naming season started September 2017 and will continue until October 2018.
The names chosen for this storm season are: Aileen (assigned), Brian (assigned), Caroline (assigned), Dylan (assigned), Eleanor (assigned), Fionn, Georgina, Hector, Iona, James, Karen, Larry, Maeve, Niall , Paul, Rebecca, Simon, Tali, Victor and Winifred
There are no names beginning with Q, U, X, Y and Z, and names already associated with a prior traumatic weather event - like Hurricanes Sandy and Katrina - are avoided.
The Met Office will seek another set of names for the 2018/2019 period when the public will be asked to supply new suggestions next year.
The forecasting agency said research conducted after named storms show increases in awareness and action, with 89 per cent of people polled after last year's Storm Doris aware of the severe weather.
Most (94 per cent) of those aware of the storm had found the severe weather warnings useful, and 82 per cent of those who had taken action felt they were right to do so, the survey found.