A yellow weather warning for ice has been issued by the Met Office for large parts of the UK.
Most of Northern Ireland and most of Scotland will be affected by the weather warning from midnight to 11am tomorrow.
The Met's forecasters say people may suffer some injuries from slips and falls on icy surfaces and there are likely to be some icy patches on some untreated roads, pavements and cycle paths.
A Met Office spokeswoman said: "Northwesterly winds bringing cold, showery conditions, leading to icy patches overnight and into Friday morning.
"This is most likely on untreated surfaces, but in some places grit or salt may be washed off by heavy showers.
"Showers will be wintry at times even to low levels, with a few centimetres of snow possible on some of the the highest routes, and smaller amounts down to around 100-150 metres elevation."
Yellow warnings can be issued for a range of weather situations.
Many are issued when it is likely that the weather will cause some low level impacts, including some disruption to travel in a few places.
Many people may be able to continue with their daily routine, but there will be some that will be directly impacted and so it is important to assess if you could be affected.
Other yellow warnings are issued when the weather could bring much more severe impacts to the majority of people but the certainty of those impacts occurring is much lower.
The Met Office added that it is important to read the content of yellow warnings to determine which weather situation is being covered by the yellow warning.
Regions and local authorities affected
Central, Tayside & Fife
- Clackmannanshire
- Falkirk
- Fife
- Perth and Kinross
- Stirling
Highlands & Eilean Siar
- Highland
SW Scotland, Lothian Borders
- West Lothian
Strathclyde
- Argyll and Bute
- East Ayrshire
- East Dunbartonshire
- East Renfrewshire
- Glasgow
- Inverclyde
- North Ayrshire
- North Lanarkshire
- Renfrewshire
- South Ayrshire
- South Lanarkshire
- West Dunbartonshire
Northern Ireland
- County Antrim
- County Armagh
- County Down
- County Fermanagh
- County Londonderry
- County Tyrone
