The warning will remain in place until 11 o'clock tonight.
A status yellow thunderstorm and rain warning is in effect for Connacht and 15 other counties.
The warning will remain in place until 11 o'clock tonight.
Met Éireann says the affected areas will see heavy downpours, gusty winds, and a chance of hail.
Cathal Nolan from the Ireland Weather Channel says there's a risk of localised flooding:
'What we are likely to see is the development of pretty heavy showers and thunderstorms.'
'With that there is the risk of large accumulations of rainfall falling.'