Over 20mm of rain has fallen in the last 12 hours, says Carlow forecaster Alan O'Reilly as he issued a flood warning.
According to www.carlowweather.com, heavy rain overnight is clearing most areas now with sleet/snow still falling in parts of Ulster.
Alan added: "With over 20mm falling in the last 12 hours the flooding situation will continue to worsen. Levels on the Shannon continue to rise.
"Mix of bright spells and showers [on Monday], turning cold from this evening with a cold week ahead an risk of wintry showers [on Tuesday]."
Subscribe or register today to discover more from DonegalLive.ie
Buy the e-paper of the Donegal Democrat, Donegal People's Press, Donegal Post and Inish Times here for instant access to Donegal's premier news titles.
Keep up with the latest news from Donegal with our daily newsletter featuring the most important stories of the day delivered to your inbox every evening at 5pm.