Met Eireann has issued a national warning as "thunder, heavy downpours, hail and flooding" get set to batter Ireland tomorrow.
The Status Yellow alert was issued this afternoon, with all of Northern Ireland under the same caution from weather experts in the UK.
A forecaster said: "Heavy thunderstorms are expected to develop later on Thursday and Thursday night with some severe downpours, hail and spot flooding."
But some parts of the country could escape the deluge.
"Due to the localised nature of thunderstorms some parts of the country will remain dry", the forecaster added.
The warning was issued at 1pm on Wednesday and is valid from 4pm on Thursday until 9am on Friday.
Met Eireann added: "The outlook for tomorrow, Thursday night, is for an ongoing risk of heavy showers with lightning. Winds will be mainly light northerly or variable becoming light westerly. Lowest temperatures of 11C to 14C."
Meanwhile, the Met Office also issued a warning for Northern Ireland, covering all six counties.
They said: "Whilst many places will be dry or see little rain, thunderstorms may cause flooding and disruption in a few places."
This warning will be in place from 4pm on Thursday until 9am on Friday.
