The Met Office issued two "yellow" alerts on Friday as the storm began creeping towards south-western corners of the United Kingdom and the tip of Ireland.
"The strongest winds then transferring across the Midlands and parts of northern England during Tuesday morning and into the afternoon".
"Wednesday is now looking like being a wet day with heavy rain and strong southwest winds". But most will clear by early Tuesday morning.
Ferocious winds lurking in the Atlantic threaten to whip across western regions of England and Wales from Monday evening, heralding a day of disruption and hazardous conditions. For some exposed areas gusts could reach in excess of 75mph in places.
Weather forecasters cancelled a previous weather warning for Tuesday as gales were not thought to be a threat.
"However it's four days out so that warning is subject to some changes".
The warning to motorists came after forecasters extended the rainfall warning to five counties.
What can we expect on Wednesday from Storm Ali?
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Some roads and bridges may close.
Met Éireann said yellow warnings may still be extended to counties Cork, Waterford, Wexford, Wicklow, Dublin, Meath and Louth.
The huge storm is set to hit the United Kingdom tomorrow, bring winds of up to 85mph and cause widespread travel chaos.
The remnants of the storm could even end up bringing some drier conditions to the south west of the UK.
It will be mostly cloudy elsewhere with just scattered outbreaks of rain and drizzle, but with limited bright or sunny spells will shine through also.
Tomorrow will start off windy, with temperatures of between 16C and 20C. Helene is coming through overnight tonight bringing wind and rain.
More generally today, rain will be persistent and often heavy today in parts of Connacht and west Ulster.
"Wednesday now looks like being a wet day with heavy rain and strong south-west winds".