A low temperature/ice warning has been issued as large parts of Ireland are in for a bitterly cold Friday night.
Met Eireann has put 17 counties on yellow alert as temperatures are set to plunge to as low as -4C overnight.
The weather warning, which covers all of Connacht and Leinster, will be valid from 6pm on Friday until 11am on Saturday.
A statement said: "Temperatures are expected to fall as low as minus 4 degrees tonight, with the coldest temperatures around dawn, staying below freezing until mid-morning on Saturday."
The weather chiefs are predicting widespread severe frost, with every part of Ireland expected to see lows of between 0C and -4C.
A Met Eireann forecaster said: "Cold and clear tonight with a widespread sharp to severe frost and icy surfaces.
"Lowest temperatures between 0 and minus 4 degrees. Winds will be light variable with some patches of mist and fog in places."
Sub-zero temperatures may still be around early on Saturday, but frosty patches are expected to clear to leave a dry and day.
The forecaster said: "Frost and fog will clear on Saturday to leave a dry, calm and mostly sunny day.
"A very cold start, temperatures will remain below freezing until mid morning and then staying cold through the day with afternoon temperatures of 3 to 7 degrees with light variable breezes."
