The Met Office has extended its yellow warning for snow to cover the whole of Cornwall with it expected to develop over Tuesday evening

An area of rain, sleet and snow is expected to develop over southwest England during Tuesday evening and move east during early Wednesday before clearing mid-morning.

Whilst drier conditions may develop for a time through the middle of the day, a further spell of sleet and snow is likely to develop during the afternoon and move east into the evening.

Falmouth Packet: The warning extends right across the southThe warning extends right across the south (Image: Met Office)

There remains significant uncertainty in how far north snow develops as well as whether accumulations are focused mainly over higher ground.

At this stage, the focus for the higher snow accumulations is across England south of the M4 during later Wednesday where there is a chance that some places could see 5-10 cm falling in a few hours.

Earlier in the day and across the wider warning area, accumulations are expected to be lower, typically 1-3 cm. As snow clears on Wednesday night, clearing skies will result in ice developing on untreated surfaces with impacts lingering into Thursday morning.

Met Office Chief Meteorologist Dan Suri said: “Snow, ice and low temperatures are the main themes of this week’s forecast, as the UK comes under the influence of an arctic maritime airmass as cold air moves in from the north.

“Snow is already falling in parts of the north where some travel disruption likely, as well as a chance of some rural communities being cut off. Snow showers will continue through today and Tuesday here, and Northern Ireland will also be subject to some snow showers, especially over high ground.

“Ice will provide an additional hazard for many with overnight low temperatures well below 0°C for many. Further south wintry hazards will develop with parts of England and Wales affected by icy patches and snow in places tonight and likely further snow in parts of the south early Wednesday.”