Heavy rainfall overnight has left many roads throughout the country flooded.
Although the rain is easing this morning, many roads in Munster and Leinster are experiencing problems.
Gardai have warned that motorists in Dublin should take extreme care around junctions, two, three and four which are almost impassable.
Flooding has also been reported on the Chapelizod Road at South Circular Road.
In Wicklow, surface water is causing problems on the N11, northbound at The Beehive and the Ballinameesda Bends.
Spot flooding is also affecting parts of Greystones and Bray.
Many roads in Wexford town are impassable and there is flooding on the Waterford to Dunmore East Road at Dunmore East and Callaghane.
AA Roadwatch revealed that Munster and Leinster are the most affected
According to The Irish Independent Wexford Mayor Jim Allen said he had never seen anything like it. “It’s been like a monsoon all day,” he said.
“I’m in the car now and it’s pretty bad. There’s a couple of feet of water on the roads. I’ve never seen it like this before.”
The N25 from Waterford to the New Ross Road is impassable at New Glen.
Cork has also been badly affected and parts of Rathcormac are impassable.
In Tipperary, the n76 Grangemockler to Kilheffernan Road is impassable at O’Donnell’s Bed and at Glenbower.