The winter is about to bite "with a vengeance" for years with parts of the country facing the heaviest snowfall, the meteorologists say. A barrage of Atlantic storms will result in sub-zero Arctic air sinking into the UK, triggering torrents of snow across the country in the coming weeks. The polar conditions threaten to hit the nation until February with some experts predicting extreme cold to last until spring.
The bad weather of the United Kingdom will start this weekend with very strong winds and uninterrupted rains in the country.  A low pressure system due to the swipe Scotland will detonate two stormy days before the cataracts open themselves to the fury of the Arctic.
Lighter air will push temperatures into double numbers in parts before the mercury peaks more than 1
Weather charts show almost the entire country engulfed by snow at the end of January, led by a Sudden Stratospheric Warming (SSW) of the North Pole.
Newer United Kingdom weather forecast: The end of January 2019 will freeze
SSW puts Britain in the line of fire for the pungent winds from Russia and Siberia and was the driver for the wild beast of the East that struck just before last spring.
Exacta meteorologist James Madden warned that a long and hard period of severe cold is going to hit Britain.
He said: "From the middle of next week and until the end of the month will bring a significant change to many more winter conditions across the country.
" This will be accompanied by a significant and prolonged drop in temperatures for several weeks and repeated snowy events that could have a very large impact.  "Current indications show that even southern Britain in the line of fire and this part of the country could see the heaviest snowfalls for years with permanent accumulations.
" The winter is going to hit with a revenge, and despite being a little later than expected, people should not be lulled into a false sense of security, we are facing a considerable and prolonged period of cold and snowy conditions.
United Kingdom: temperatures drop below freezing largely through the last third of January
"Generally the cold could resist until February and even at the beginning of the meteorological spring. "
international meteorologists and those who observe the development of SSW say that its effects will hit at full throttle in about nine days.
Britain will also fall at the mercy of a negative Arctic Oscillation (AO) & # 39; triggered by the polar heating effect.
A negative AO, triggered by pressure changes between the North Pole and the regions to the south, weakens the prevailing western winds allowing Arctic air to push south into the United States and Europe.
The forecasts issued by the US Oceanic National and Atmospheric Administration (NOAA) warns the Arctic Oscillation will swing in a negative phase towards the end of next week.
Judah Cohen, climatologist for the Atmospheric and Environmental Research of the United States (AER), wrote on Twitter: "GFS [weather models] which predicts the temperatures of the #colder and an increase in #snowfall potential across Western #Europe after the January 20 when the Arctic Oscillation becomes definitely negative. "
Weather forecast UK: Snow smothers uk
The chief meteorologist, Martin Young, said: "The latest forecasts suggest the highest risk of any severe winter weather is from late January to February.
" If the cold spells will be caused by & # 39; Arctic air that comes from the north or from the eastern flows coming from the continent remains uncertain.
"However, before that happens we expect a fairly variable change and a relatively mild period over the weekend and at the start of next week, with a little rain for most of us
"From the middle of next week, and especially during the last week of January and the beginning of February, there is a greater probability that the cold will be consolidated throughout the United Kingdom.
"This would result in a greater risk of snow and freezing almost everywhere in the UK, but particularly in the northern parts."  UK Weather Forecast: Snow Mapped to Hit Britain "title =" UK Weather Forecast: Snow Mapped to Hit Britain "data-w =" 590 "data-h =" 481 "date -src1 = "https: //cdn.images .express.co.uk / img / dynamic / 153 / 590x / secondary / UK-weather-forecast-Snow-mapped-to-hit-Britain-1684048.jpg? r = 1547291852523 "data-media1 =" "data-imgcount =" 1 "/>
Weather forecast of the United Kingdom: Snow mapped to hit Great Britain
Office met Sarah Kent said that an unstable period of time this weekend will precede a potential cold snap  The wind and rain will resume tomorrow before delivering a rollercoaster ride of 48 hours of gusts and gusts of wind very strong, he warned.
He said: "This weekend will bring a bit of ch ange from the time we have seen in the last week or so.
"Saturday will become windy with all parts of the United Kingdom that should be hit, the winds will be stronger in the north and in the exposed regions.
" Sunday will be windy again with the strongest gusts, once again on the hills and exposed parts of the country.
"We could see gusts of 50 miles per hour in some parts and touch 50 miles all the way through the Shetlands and northern Britain."
Temperatures will drop next week before the cold from SSW digs in the following weeks, he added.
He said: "Next week will become colder and then there is a chance of a colder climate later the month.
" We had the Sudden Stratospheric Warming at the end of December and although this can lead to a colder climate in the United Kingdom, all the domains needed to trigger this have not been aligned.
"Some of the dominoes are beginning to line up and towards the last week of Ja Nary and the first week of February they are likely to see a significant decrease in temperatures.
" It could be a very cold shot with widespread frosts and the risk of snow while Atlantic frontal systems collide with cold air
"This time could come from an east direction, but it's still too early to tell where the cold will come from."
John Hammond, Weathertrending meteorologist, said a slight start next week could lead the way to the first widespread snowfall of the season by next weekend.
He said: "It will be a benevolent beginning for the week.
" There could be a frost for some Mondays, but a milder wave. The Atlantic winds will push from the west, along with clouds and humidity.
"For the rest of the week, the mild air of the Atlantic and the colder Arctic air will take turns to whiz across the country with windy winds, with each frontal blow that generates a period of rain  "By the weekend, I foresee that the snow will fall in places – initially through the northern hills.
"But there is a significant risk of more extensive snowfall while the next Atlantic system" hurls "in the cold air, then residing throughout the United Kingdom."
Weather maps they show mercury that falls below zero across the country that abandons itself to the second half of January.