Parts of the UK look set to be blanketed in snow later this month, with maps showing blizzards hitting both Scotland and England.
According to advanced weather modelling maps by WXCharts, the wintry conditions are expected to begin in the early hours of October 28, bringing widespread snowfall to northern areas.
The heaviest flurries are predicted across the Cairgnorms National Park in the Scottish Highlands, where snow could fall at an intense rate of 3cm per hour. At the same time, light snow showers are forecast in parts of North Yorkshire, including Richmond and surrounding villages. Elsewhere, Newcastle, Manchester and Aberdeen may see occasional rain while the rest of the country will remain dry but cool.
By the morning of October 29, the snow is expected to ease slightly with northern Scotland and parts of Newcastle seeing lighter falls of around 1-2cm per hour. Most of the UK will stay dry and chilly, with patchy showers west of Manchester and across the far north.
The wintry weather will intensify again by October 30, when large parts of Scotland - including Edinburgh, Inverness, and the wider Highlands - are set to face another round of 3cm per hour snow. London, Birmingham, Cardiff and Plymouth will remain dry but cold.
On Halloween, forecasters predict fresh snow across Cumbria and the Lake District from midnight, with flurries of around 2cm per hour reaching as far south as Yorkshire. Light rain will affect Surrey, Southampton, and parts of northern Scotland, but most areas will stay dry under crisp autumn skies.
It comes after the Met Office warned of a "cooler and more showery northwesterly regime" as "high pressure" is set to bring unsettled weather.
In its long-range forecasts from October 8 onwards, the forecaster says: "There may be a transition to a slightly cooler and more showery northwesterly regime, as high pressure builds over the Atlantic to the west, and low pressure becomes centred to the east of the UK. Temperatures are likely to be near or slightly above average overall, although may trend slightly below normal later.
"It is likely to be changeable at first, with a showery northwesterly regime most favoured across the UK. Into November, an unsettled pattern is anticipated, as low pressure systems over the Atlantic track across the UK.
"These may be shifted farther south than normal, bringing showers or longer spells of rain fairly widely, perhaps also accompanied by some strong winds at times."