A Status Yellow rainfall warning has been issued for the southern half of the country.
The warning will come in to force in Munster, Carlow, Kilkenny, Laois, Wexford, Wicklow and Offaly at 1am on Thursday morning.
It is expected to remain in place for 24 hours.
Met Éireann said intense and potentially thundery downpours are expected tonight and through tomorrow.
The forecaster said river levels are already high after the heavy rains of recent days. It said tonight’s rain could result in river flooding.
Status Yellow rainfall warning for Munster, Carlow, Kilkenny, Laois, Wexford, Wicklow and Offaly.
For all current warnings see here: https://t.co/ozrQHtoOkt pic.twitter.com/T13YL9S2Fi— Met Éireann (@MetEireann) August 26, 2020