Much of the United Kingdom will experience some heavy rain on Friday, with further spells at times during Saturday, as Storm Callum passes to the northwest of the UK.
The warning for those counties is in place from Friday 12 October 2018 00:01 to Friday 12 October 2018 09:00.
The weather warning for wind is in place for Central, Tayside & Fife, Highlands & Eilean Siar, Northern Ireland, southwest Scotland and Lothian Borders Strathclyde between 3am to midnight on Friday.
Today's unseasonably warm weather will be replaced by the strong winds and heavy rain felt at the beginning of the week as we head into Friday and Saturday.
On Wednesday, Met Éireann confirmed that Ireland would be battered by wind and rain from Storm Callum, issuing an orange wind warning for several counties and a yellow weather warning for others.
The warning comes into effect from 10pm tomorrow night and covers Donegal, Galway, Mayo, Sligo, Clare, Kerry Dublin, Louth, Wexford, Wicklow, Meath, Cork and Waterford.
Image - Met Office impact matrix for Friday's wind warning.as event become more likely, could rise to an Amber warning.
Areas in the south and south west could see between 50 and 100mm of rain by the end of Friday, with as much as 120 to 160mm falling over high, south-facing ground. Wind speeds will be higher in some coastal areas and on high ground.
According to the Met Office, gusts of 50 miles per hour are likely with potential for gusts of 60 miles per hour around exposed coasts and hills. "Along with a spell of heavy rain and high tides there is a risk of coastal flooding and damage".
"High tides are also near their peak, heightening the risk of coastal impacts due to large waves".
The winds will ease over all of Ireland on Friday afternoon and by Friday evening for Scotland.
There is also a yellow warning of heavy rainfall for the north of England and parts of Scotland on Saturday.
Gary White, NRW's Duty Tactical Manager, said: "The current forecasted rain could cause flooding this week, especially in south and west Wales, and we are urging people to prepare themselves".