Weather warnings upgraded ahead of intense rain for island of Ireland
Northern Ireland is expected to experience some of the worst of a heavy spell of rainfall on Sunday evening into Monday.
Forecasters predict the region could see half a month's worth of rain in less than a day.
It comes as yellow-level rain warnings were put in place for the eastern counties of Northern Ireland, as well as several counties south of the border.
⚠️⚠️ Amber weather warning issued ⚠️⚠️
Rain across south eastern Northern Ireland
Sunday 2300 – Monday 0800
Latest info 👉 https://t.co/QwDLMfRBfs
Stay #WeatherAware ⚠️ pic.twitter.com/5AQefwTxMs
— Met Office (@metoffice) July 20, 2025
The Northern Ireland warning applies for Antrim, Armagh and Down between 6pm on Sunday until 6pm on Monday.
A more intense amber-level warning was also put in place between 11pm on Sunday and 8pm on Monday.
The Met Office warned that homes and businesses are likely to be flooded.
The expected rainfall carries a risk of flooding, power cuts and dangerous driving conditions.
Forecasters also warn there is a small chance that some communities could be cut off by flooded roads while fast-flowing or deep floodwater could pose a danger to life.
Simon Partridge, a forecaster with the UK Met Office, said: 'It looks like Northern Ireland is the place where we could see the most rainfall and certainly the most impactful rainfall.
'They could see 50 to 75mm of rain within 12 to 18 hours.'
The region records an average of 89mm of rain in July, meaning more than half a month's rainfall could hit Northern Ireland in less than a day.
A yellow-level thunderstorm warning was in place for the western half of Northern Ireland between midday and 8pm on Sunday.
Warning Updates
Status Orange Rain & thunderstorm warning for Dublin, Louth & MeathValid: 00:00 21/07/25 to 14:00 21/07/25
Status Yellow Rain warning for Kildare, Wicklow & MonaghanValid: 00:00 21/07/25 to 14:00 21/07/25
Stay safe and updated⚠️https://t.co/GYji547FKt pic.twitter.com/4r5XXhrTxp
— Met Éireann (@MetEireann) July 20, 2025
The Republic of Ireland's forecasting agency, Met Eireann, issued its own orange-level rain and thunderstorm warning for Dublin, Louth and Meath between midnight and 2pm on Monday.
It said there would be widespread surface flooding, very difficult travelling conditions, lightning damage and very poor visibility.
A yellow-level warning for Kildare, Wicklow and Monaghan applies for the same time frame.
It said there will be spells of heavy rain with a chance of isolated thunderstorms, localised flooding, poor visability and difficult traffic conditions.
It followed earlier thunderstorm warnings for Cork and Clare in the south-west of the country, which had both expired by 7pm on Sunday.
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