The Met Office has issued a yellow warning for ice covering Northern Ireland. It comes as a second yellow warning for snow and ice is already in place across a chunk of Scotland.
The yellow alert for ice in Northern Ireland came into force at 5pm and runs until 9am on Wednesday.
It covers County Antrim, County Armagh, County Down, County Fermanagh, County Londonderry and County Tyrone.
The Met Office warned the icy conditions could lead to some travel disruption in Northern Ireland.
The weather service said: “Showers this evening and overnight will leave wet surfaces leading to icy stretches on untreated roads and pavements.
“In addition, the showers will fall as snow on high ground with 1 to 3cm settling above about 200m.”
The Met Office warned there could be injuries from slips and falls on icy surfaces.
It also warned of icy patches on some untreated roads, pavements and cycle paths.
Meanwhile, a separate yellow warning for snow and ice covering a swathe of Scotland is in force until 9am tomorrow.
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“Below 100m, accumulations are most likely to be temporary and slushy.
“Above 200m 2-5cm is likely in places with 10-15cm possible on higher routes.
“Icy stretches are also expected in association with these showers, particularly where they fall as sleet to low levels.
“In combination with winds gusting 50 to 60mph at times temporary blizzard conditions and some drifting of snow on higher level routes is likely.”
The Met Office said people should expect driving conditions to be difficult at times on higher routes.
Journey times could also be longer by road and train.
A yellow wind warning across northern Scotland runs until 11.59pm on Tuesday.