A status yellow Thunderstorm warning has been issued for 10 counties.
The alert - for Cavan, Monaghan, Longford, Louth, Meath, Westmeath, Offaly, Leitrim, Roscommon, Galway - is now in effect until 9pm.
Deirdre Lowe of Met Eireann says there will be heavy showers or thunderstorms that could lead to localised flooding.
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