It's expected to peak around lunchtime on Tuesday.
Met Éireann has issued a status yellow rainfall warning for Ireland, with stormy conditions expected to affect parts of the country from tonight.
A rainfall warning for the entire country is valid from 9pm Monday (tonight) until 9pm on Tuesday.
A forecaster said: ''Intense rainfall is expected at times Monday night and on Tuesday. Falls of 30 to 50 mm are expected with surface flooding.
''This rainfall will further elevate river levels and may result in river flooding also''.
Meanwhile a status yellow wind warning will come into effect for Munster, Carlow, Kilkenny and Wexford on Tuesday at 6am, until 7pm.
Status Yellow - Rainfall warning updated to cover the whole country. Valid: from 21:00 Monday 24/08/2020 to 21:00 Tuesday 25/08/2020. https://t.co/ozrQHtoOkt
Issued: 06:41 Monday 24/08/2020 pic.twitter.com/LwU92QTEn8
— Met Éireann (@MetEireann) August 24, 2020
Alan O' Reilly from Carlow weather says the worst of the conditions will be tomorrow afternoon.
''The problem really is that it's going to be during daylight hours, and peaking around lunchtime in some areas tomorrow so that's going to have some strong winds'', he said.
''It's not quite to the level of Storm Ellen, but it is at a level at this time of the year when trees are in full leaf when you would expect power outages and disruption''.
