Storm Doris is likely to cause travel disruption, damage buildings and send debris flying across the UK, forecasters have warned.
A yellow weather warning has been put in place for parts of Ireland, with strong wind and heavy rain expected on Wednesday evening.
Some snowfall is expected too over high ground.
"Rainfall totals of 20-30mm could bring some localised flooding and surface water issues," according to the Met Office warning.
"Then later on Thursday morning gusts of 55mph (90km/h) could bring some minor travel disruption."
Storm Doris is expected to move on quickly, with the worst of the weather gone by Thursday evening.
While further Atlantic gusts will bring more rain and wind through the weekend and into next week, they are not expected to reach the heights of Doris.
Winds of up to 80mph are expected to plague northern Scotland on Wednesday before Doris arrives from the Atlantic on Thursday, the Met Office said.
Further south, blustery gales overnight will subside over the course of the day, before picking up again in the evening.
Amber warnings predict strong winds and heavy rain in parts of North Wales, the Midlands, and east and north-west England, while winds as fast as 60mph are also expected to batter southern England.
"We have got a fairly active area of low pressure coming in from the Atlantic," said Met Office forecaster Emma Sharples.
"It is strengthening as it moves eastwards to the UK."
The Met Office's amber weather warning alerts people that "whilst the strongest winds look to be only short-lived, damage to structures, interruptions to power supplies and widespread disruption to travel networks are likely, with a danger of injury from flying debris".
A weather warning for snow is also in place for Scotland, which could see treacherous blizzard-like conditions.
Storms with the potential to cause substantial impact are named by the Met Office and Met Eireann, moving through the alphabet.
The first was named Abigail in November 2015, after members of the public suggested monikers for the "name our storms" project.
Forecasters are now in their second run through the alphabet. After Doris, Britons can expect to hear of Ewan, Fleur and Gabriel.
Storm Doris's appearance contrasts with Monday's temperatures, where visitors to Kew Gardens, west London, enjoyed the warmest day of the winter so far, at 18.3C (64.9F).
Parts of London and the south of England had temperatures warmer than Ibiza, southern Spain and Menorca.
