Council teams on standby in the south and east as high tides, storm-force winds and wintry showers are predicted.
Met ?ireann has issued an orange weather warning as yet another Atlantic storm depression approaches the country threatening to increase the potential for further flooding along the coastline.
It issued the orange status along the east and south-west coasts, in Dublin, Louth, Wexford, Wicklow, Waterford, Meath, Cork and Kerry.
Meanwhile, Met ?ireann has issued a yellow weather warning in Cavan, Monaghan, Donegal, Carlow, Kildare, Kilkenny, Laois, Longford, Offaly, Westmeath, Clare, Limerick, Tipperary, and Connacht.
Council teams are on standby in the south and east as a combination of high tides, storm-force winds and wintry showers are predicted to bring mean wind speeds 65 to 80km/h, gusting 90 to 115 km/h, at times, along southern and eastern coasts.
Large waves, high tides and low pressure values are likely to lead to coastal flooding and Cork City Council is anticipating serious flooding in the city tonight .
The orange warning is valid from 3pm today until 9am tomorrow.
The Government has pledged emergency funding to assist communities hit by flooding as latest forecasts indicate more bad weather may cause further damage over the next 24 hours.
The Cabinet is today due to discuss plans for a ?10 million emergency humanitarian fund to help those whose homes have been ruined by the flooding.
However, Ministers acknowledge this is unlikely to be enough and have pledged extra money if required.
Cork City Council has begun distributing sandbags to home owners and business people in the city centre in anticipation of serious flooding in the city tonight.
A one metre surge is expected at high tide tonight at 9pm which combined with expect south easterly winds has led the council to warn those living in low-lying areas to be prepared for flooding.
According to the council, the flooding tonight may be worse than that which hit the city centre yesterday morning when several quays were flooded and businesses in the city centre were also badly hit.
The council has asked motorists to avoid the city centre between 8pm and 10pm tonight as cars and other vehicles can cause a backwash of water which can exacerbate flooding on city streets.
Pedestrians have been asked to avoid the city centre due to dangers posed by open manholes, drains and shores which may be exposed after flood waters cause their covers to lift off.
Tonight?s expected flood comes just 36 hours after both channels of the River Lee burst their banks yesterday morning, resulting in flooding along the South Mall and Oliver Plunkett Street in the city centre.
Dozens of shops along Oliver Plunkett Street and adjoining side streets such as Cook Street and Princes Street were flooded to a depth of several inches and at one point there was close to two feet of water flowing down Oliver Plunkett St.
Train networks are still affected by yesterday?s flooding with bus transfers in place between Limerick and Ennis and between Waterford and Kilkenny.