"This truly has the potential to become an extreme weather event", wrote Nolan, who issued a precautionary red weather warning, which he expects to be issued by national authorities at some point on Wednesday.
The weather warning is one of the longest ever issued, spanning from today until next Friday, 2 March.
It reads: "Heavy snow showers are expected on Wednesday".
Derry is expected to be among the areas worst affected by snow which has been forecast to hit the northwest next week.
Walkers and hikers have been warned not to underestimate the conditions - with the bright sunshine set to be followed by icy temperatures nearly 6C colder than normal. Temperatures will vary from 5º to 8º, in fresh to strong southeasterly winds.
"It will be very cold, probably the coldest period of this winter, even though March is usually the start of spring.
Many places will be dry, but snow showers are expected to develop from Monday", said Paul Gundersen, a Met Office chief forecaster.
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He's walking without any problem at all, he finished the game, he ran fully, changed angles fully. On the players that picked up knocks, Schmidt added: "Johnny just got a dead glute".
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He praised a programme launched by the administration to provide nutritious food to lactating women. He inaugurated a redeveloped beach and a revamped bird sanctuary in Diu, a coastal town.
"The most likely time for a period of more widespread snow now looks to be during Tuesday morning".
Saturday night will be dry with good clear spells and easterly winds, will be light to moderate. Turning even colder with lowest temperatures falling to between -3 and zero degrees with a widespread sharp to severe frost.
Deputy chief meteorologist Brent Walker said: "Whilst a major widespread snow event is now not expected, some parts of south east England could have the first significant spell of snow so far this winter during next week".
Those with ski vacations may find it hard to impossible to reach their destinations due to the sheer amount of snow, with skiing made more challenging due to frigid air temperatures and strong winds.
Britain is set for the coldest February week in five years as freezing air arrives from Russian Federation. Transport disruption is likely in areas with significant snowfall.
The North Pole is forecast for lows of -7C tomorrow - which could seem positively balmy when Britain hits its lowest temperatures in years.