The Irish Coast Guard has advised members of the public to take care in the current severe weather conditions - particularly around the coast and in exposed areas.
Winds of up to 130 kilometres per hour are expected to hit parts of the West and North later tonight and tomorrow.
Waves are also expected to reach up to 10 metres high, as the remnants of Hurricane Katia makes its way across the Atlantic.
Met Eirean has issue this forecast for Donegal covering Sunday night and Monday: Rain spreading from the west this evening with fresh to strong and gusty south to southwest winds.
The rain will be persistent and heavy for a time tonight. Winds will continue to strengthen overnight, and it will become very windy with squally showers. Strong and gusty southerly winds will veer south-westerly increasing to gale-force by morning. Minimum temperatures of 11-13degrees C.
A very windy day, with strong to gale force winds, gusting to storm force or violent storm force in exposed areas. Winds will gust up to 130km/hr. Bright or sunny spells and squally showers. Top temperatures of 14-15degrees C