A snow warning for Wiltshire has been upgraded to amber by the Met Office.
Snow and freezing rain is expected across the county from midday tomorrow (Saturday, 4 January).
While most of Wiltshire remains covered by a yellow weather warning, some northern parts have been upgraded to an amber warning – with severe disruption likely from 6pm.
Snow and freezing rain is predicted to continue until late on Sunday (5 January).
In a statement, a Met Office spokesperson said: “Snow will become persistent and locally heavy as it pushes south to north across the warning area.
“As well as snow, a period of freezing rain is also likely bringing some hazardous travel conditions, before milder air follows across all areas by Sunday morning.
“Whilst there is some uncertainty in details, 3-7 cm of snow is likely for much of the warning area, with locally 15-30 cm for the higher ground of Wales and the southern Pennines.
“Freezing rain could lead to ice accretion in places, especially parts of Wales, before the milder air leads to a rapid thaw of snow and ice in the south of the warning area through Sunday.
“It is safer not to drive in these conditions, but if you need to make an essential journey, consider alternative forms of transport, to keep you and others safe.
“If you must drive, do this more safely by: using dipped headlights; accelerating gently, using low revs and changing to higher gears as quickly as possible; starting in second gear to help with wheel slip; maintaining a safe and steady speed, keeping distance from other vehicles; using a low gear to go downhill, avoiding braking unless necessary; steering into skids, not taking your hands of the wheel, and avoiding slamming on brakes.
People cope better with power cuts when they have prepared for them in advance. It’s easy to do; consider gathering torches and batteries, a mobile phone power pack and other essential items.
“If isolated due to snow or ice, follow these simple steps to keep safe and well: keep the thermostat set to the same temperature both during the day and at night; turn off electrical heaters and put out your fire before going to bed; ensure pets are safe by keeping them warm and comfortable; prevent frozen pipes by opening kitchen and bathroom cabinet doors to allow warmer air to circulate around the plumbing; stay indoors, wrap up warm and close internal doors to keep the heat in; and, if you need support call the British Red Cross Support Line on 0808 196 3651.
“Help to protect vulnerable people that you know including older people, those with underlying conditions and those who live alone; they may need support with food and medical supplies. If you are worried about your health or that of somebody you know, ring NHS 111.
“Stay up to date with the weather forecast for your area and follow advice from emergency services and local authorities.”