Ronaldsway Met Office has issued a yellow warning for snow, affecting the entire island from 6pm tonight.
Snow is initially forecast for high ground above 800 feet overnight. However, from around 5am on Friday, the snow level is expected to lower to areas above 300 feet, becoming largely confined to the south of the island.
Showers on Friday falling as rain to low-levels and sleet for high ground will be replaced by a larger area of showery rain through this evening and to start the overnight period.
This rain falling as sleet and snow for high ground with any snow confined to above 800FT.
Towards the end of the overnight period (from around 5am) colder air allows the snow level to lower, but at the same time the precipitation starts to peter out with wintry showers returning.
These showers will start to become confined to the south of the island on Friday morning but will fall as a mixture of rain, sleet or hail to low-levels and as snow/hail above 300 FT.
Slight accumulations of snow possible above 800 FT overnight and then Friday morning accumulations are also possible above 300 FT in areas affected by the wintry showers – this most likely in the south of the island.
Any accumulations of hail to low-levels will be short-lived but may cause some isolated icy patches.