Met Eireann has issued a yellow rainfall warning for Donegal.
The national forecaster says up to 50mms of rain could fall on Donegal as well as Galway and Mayo between Tuesday and Wednesday.
A spokesperson said “Heavy rain with accumulations between 30 to 50mm expected, potentially higher amounts possible in mountainous areas. Localised flooding, poor visibility and poor driving conditions are expected.”
The warning is valid from 1pm on Tuesday to 1pm on Wednesday.