Roscommon and Leitrim have been included in a status yellow weather warning by Met Eireann.
Thunderstorms may lead to spot flooding in the west of the country later today.
Munster and Connacht will be affected by a status yellow rain and thunderstorm warning from 6pm until the same time tomorrow.
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Alan O'Reilly from Carlow Weather says the bad weather won't be going away any time soon.