The Met Office has issued a ‘danger to life’ weather warning with Storm Ali set to batter the UK with 80mph winds and heavy rain.
Amber severe weather warnings for the north of England, Scotland and Northern Ireland were issued ahead of Storm Ali's arrival in the early hours of Wednesday.
Journeys by road, rail and air are likely to be disrupted and the conditions could also damage buildings, lead to power cuts and blow over trees.
Ali is first on the storm names list for 2018-19 announced by the Met Office and Met Eireann, which has run the Name Our Storms scheme for four years.
The Met Office has warned of travel cancellations and flying debris that could pose a danger to life.
Milder yellow wind warnings were also issued across Northern Ireland, Scotland, the north of England and Wales on Wednesday.
The amber warnings are in place from 8am to 5pm, while the yellow alerts are scheduled from 6am to 10pm.
Forecasters cancelled a wind warning for Tuesday due to gusts not meeting the power threshold as Storm Helene fades away.
Meteorologist Dean Hall said parts of the UK felt gusts of about 30-40mph on Tuesday morning, with wind speeds reaching 50mph in parts of Wales.
Storm Helene, which started as a hurricane, was named by the US National Hurricane Centre and not the Met Office, so does not officially count as part of the UK named storm season despite making it to Britain and Ireland.
Helene, which was downgraded after initial warnings it may pose a risk to life, is moving away towards the north east and will have moved on by Wednesday.
"We've got rain currently across Scotland, northern England, eastern parts of Northern Ireland, associated with what was Storm Helene," Mr Hall said.
Wednesday could see winds of 60-70mph, the forecaster said, adding: "Certainly we could see close to 80mph, possibly even higher miles per hour in exposed areas in the far north of the country."
Meteorologist Bonnie Diamond added: "Winds will build quite quickly through the morning and remain very strong. "Temperatures will remain fairly mild though as it brings in mild air from the Atlantic.
"Moving into Thursday we will see widespread heavy and persistent rain which looks set to change to sunshine and showers on Friday, before becoming more settled on Saturday."
Hour-by-hour Nottinghamshire forecast
7am – Sunny intervals, 15C, wind speed 29MPH
8am – Sunny intervals, 16C, wind speed 33MPH
9am – Cloudy, 16C, wind speed 37MPH
10am – Cloudy, 17C, wind speed 40MPH
11am – Cloudy, 18C, wind speed 43MPH
12pm – Cloudy, 19C, wind speed 48MPH
1pm – Cloudy, 19C, wind speed 51MPH
2pm – Light rain, 19C, wind speed 49MPH
3pm – Light shower day, 16C, wind speed 44MPH
4pm – Light shower day, 16C, wind speed 43MPH
5pm – Light shower day, 15C, wind speed 40MPH
6pm – Sunny intervals, 14C, wind speed 36MPH
7pm – Sunny intervals, 14C, wind speed 33MPH
8pm – Partially cloudy night, 13C, wind speed 31MPH