Between 00:05 Sun 11th and 11:00 Sun 11th
Scattered wintry showers are expected with ice likely to form on untreated pavements, cycle paths and roads.
Some roads and railways are likely to be affected with longer journey times by road, bus and train services. Some injuries from slips and falls are possible on icy surfaces.
Chief Forecaster's assessment
A band of rain and hill snow is expected to clear eastwards on Saturday night with clearer skies and scattered sleet, snow and hail showers following.
2-5 cm of snow may accumulate above 150 metres with some snow to low levels too, particularly across Northern Ireland and Scotland. Showers are likely to fall as rain along western coasts though.
Where skies clear after showers, ice is likely to develop on untreated surfaces later in the night.