There are further questions over why Donegal was omitted from the Orange low temperature and ice warning.
The status orange low temperature and ice alert remains in place for Sligo and Leitrim for another hour.
Donegal was the only county in Ireland to stay under a yellow alert, despite heavy snowfall and treacherous road conditions across the county.
Kenneth Conlon from the Donegal Weather Channel says temperatures will plummet again tonight but conditions may not be as severe:
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