Yellow Rain Warning Brings Flood and Delay Risk to Northern Ireland
A Met Office yellow rain warning is in force across much of Northern Ireland until early afternoon on Sunday 27 September. Heavy downpours could bring 20 to 40 millimetres in a few hours, creating surface water, spray and possible localised flooding on roads. Road, rail and bus passengers are advised to allow extra time as the band of rain clears from the west.
The Met Office alert is active from 08:30 to 14:00 and covers Antrim, Armagh, Down, Tyrone and Derry, including Belfast and Londonderry. In some places, 20–40 mm could fall within a few hours, with the rain easing from the west as the warning expires.
Met Éireann has also issued yellow-level advisories for areas in the Republic of Ireland, where thundery downpours are expected until late morning. The weather system is tracking northeast, so Northern Ireland’s heaviest rain should move away during the afternoon.
The disruption may fall most heavily on commuters, bus and rail passengers, and people heading to Belfast or Larne ferry ports or across the border. Longer journeys, missed connections and short-notice delays could affect work, appointments and leisure plans. Localised surface water may also complicate access to stations, tracks and low-lying roads, though the yellow level suggests impacts are more likely to be scattered than severe.