Road-users are being reminded to slow down and drive with care as excess surface water and spot flooding are causing poor driving conditions across the country.
In Dublin the M50 northbound has been reduced to one lane at junction 6 Blanchardstwon as a result of a collision due to flooding.
Zita Philpott from AA Roadwatch said: "Vehicles are aqua-planing, so gardaí are advising motorists to reduce their speed and use dipped headlights.
She said drivers on the M1 were advised to take care on between junction 4 for Donabate and junction 2 for Dublin Airport, especially before junction 3 for Swords as there is very heavy surface water on the road at that point.
Meanwhile, Dublin's Lord Mayor Christy Burke has said he is waiting to hear whether an emergency plan will be put in place to prevent further flooding tonight.
Councillor Burke said the city was not prepared for the heavy downpours last night which led to houses being flooded on the North Strand.
Dublin City Council’s flood risk assessment group has been meeting today to discuss the fallout.