The warning was issued at around the same time Storm Caroline was officially named by the Met Office in the United Kingdom.
From Friday to Sunday we're being told to expect strong northwesterly winds and snow showers.
Today will be the last day of mild conditions before a cold snap forecast to last until Christmas grips the UK.
STORM CAROLINE is set to bring heavy gales, snow, and ice to Ireland in the coming hours as the extreme weather conditions make their way from the United Kingdom to Irish shores.
However, their weather charts show snow is expected in Wales, the West Midlands, and Northern Ireland from around 6am.
It follows the UK Met Office naming an Atlantic storm which is set to hit Thursday Storm Caroline.
Nearly half of the workers on a North Sea platform have been relocated amid safety fears over conditions on Thursday.
'At the moment we have a yellow weather warning in place, but it could be upgraded to amber'.
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Yellow "be aware" alerts have been put on place from 8am on Thursday until 6pm on Saturday with severe weather expected to cause widespread transport disruption.
Road, rail, air and ferry services may be affected, while a loss of power in some areas is also possible.
An North Sea oil rig, off the north-east coast of Scotland, is being partially evacuated over fears extreme waves caused by Caroline could endanger workers.
CNR International said 69 of the 159 staff on Ninian South, about 240 miles from Aberdeen, would be leaving the structure as a precaution.
Meanwhile, Met Eireann also said that snow can be expected on Thursday and Friday in the west and northwest, especially on hills and mountains.
Met Éireann has issued a national status yellow warning as Storm Caroline approaches Ireland.
Snow and falling temperatures are also forecast for parts of Britain later in the week.