Meanwhile, Met Eireann has issued an orange warning for gale-force winds of up to 80mph for all the coastal counties in the Republic of Ireland on Thursday and Friday.
A storm that's been dubbed "Callum" will pass to northwest of the United Kingdom on Friday, bringing winds of up to 70mph and a prolonged downpour that will create hazardous conditions across the country.
The warnings are set to remain in place until 9 o' clock tomorrow morning for most of the country.
Spray and flooding is also likely to lead to hard driving conditions and some road closures.
"Areas of high ground exposed to the south and south west will be most affected, with the potential for 50-80mm in 12 hours, and a chance of over 120mm in a few spots". Winds will be strongest overnight and early on Friday, gusting between 90 and 110 km/h at coasts.
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"The strongest winds associated with this event will occur during the night-time hours and Friday morning rush-hour commute".
Limerick City and County Council has crews on standby to deal with any serious issues as a result from Storm Callum.
Forecasters have issued a yellow warning for Northern Ireland and western Britain on Friday.
Cllr John Campbell says areas of South Donegal which have been prone to flooding in the past owing to high tides could still be vulnerable.
"Widespread flooding from surface water and rivers is possible across south Wales on Friday and Saturday, and is possible but not now expected elsewhere in Wales and parts of north-west England".
"Our teams are doing all they can to reduce the risk for communities, but if there is flooding we want to make sure people are doing all they can to keep themselves safe".
South Wales is bracing itself for a two-day deluge that's expected to cause flash floods and travel chaos.