Thirteen counties have been given a status yellow thunderstorm warning for this afternoon as horrid conditions arrive.
The national forecaster issued the immediate warning at 1:45pm and have put the notice in place until 8pm tonight.
Carlow, Kildare, Kilkenny, Laois, Longford, Louth, Meath, Offaly, Westmeath, Cavan, Donegal, Monaghan and Tipperary are all under the warning.
A Met Eireann forecaster said: "Thundery showers this afternoon and evening with hail and heavy downpours bringing the risk of spot flooding."
All of Ireland is likely to get some rain today with weather chiefs predicting a mixed bag of weather.
The forecaster added: "Showers will become widespread today, with some heavy thundery downpours, especially this afternoon with a risk of hail and spot flooding. Top temperatures of 12 to 15 degrees. Light to moderate south to southwest winds will increase fresh near southern and eastern coasts this afternoon.
"The showers will gradually become lighter and more isolated early tonight, with clear spells developing. Further showers will move into western parts of Munster towards morning. Minimum temperatures of 3 to 7 degrees, in a light to moderate southerly breeze."
