THUNDERSTORMS will likely develop this afternoon and evening in south west Ireland right up to the Laois and Offaly borders.
Met Eireann has issued a status yellow thunder warning now in place.
It covers the whole of Munster up as far as Tipperary bordering Laois and Offaly and is valid from 3pm to midnight this Thursday August 13.
"Thunderstorms will likely develop this afternoon and evening. Due to the localised nature of thunderstorm activity some areas will escape completely, but areas impacted will see torrential downpours with possible hail, leading to some spot flooding," the national forecasters say.
The warning was issued at 11am.
Temperatures hit 24 degrees in Laois today, and will remain warm and muggy, until heavy rain hits next Monday.
"Friday night will be mild and humid, with lowest temperatures of 13 to 17 degrees. Mist and fog patches will develop in light northeasterly or variable breezes.
Saturday starts with low cloud, mist, and fog. Sunny spells will develop by the afternoon. Warm and humid with highest temperatures of 20 to 24 degrees.
Saturday night will be another mild and humid night with lowest temperatures of 12 to 16 degrees with mist and fog patches developing.
Sunday will be a mix of sunny spells and scattered showers with some heavy or thundery bursts in the afternoon. Warm with highest temperatures of 18 to 22 degrees in light to moderate easterly or variable breezes.
Monday will be cloudy with widespread showers, merging into longer spells of rain at times. There still is a risk of thunderstorm activity, especially in the afternoon. Highest temperatures of 18 to 21 degrees in light variable breezes.
Further Outlook according to Met Eireann is for humid and unsettled conditions continuing into next week with showers or longer spells of rain as temperatures decline gradually.