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What synoptics would we need for a blizzard like the one in America?


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Posted
  • Location: Near Allenheads,1400 feet up in northumberland
  • Location: Near Allenheads,1400 feet up in northumberland

This time next month we will be wondering what all the fuss was about. London will of had 9inches on the ground for 2 weeks and the north and Scotland will of been under 3 feet since early Feb. Plus the forecast into March will be for more of the same. 

Oh how we will mock those who said winter was over in the last week of Jan!

And to cap it all the Bbc will announce their new weather data provider as Exacta weather!

 

Edited by tynevalleysnow
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Posted
  • Location: Alston, Cumbria
  • Weather Preferences: Proper Seasons,lots of frost and snow October to April, hot summers!
  • Location: Alston, Cumbria
On 24/01/2016 at 4:26 PM, Deep Snow please said:

Imagine you've been given access to the control centre for World Wide Weather and employed by a very rich bloke to make sure that the entire United Kingdom is blanketed in between 2ft-3ft of powder snow falling in under 36 hours. What do you do to ensure this happens, do you set an Easterly up and through some serious precip up, use a Greenland high or just dump some mad storm over the UK for the period. In addition to this it needs to thaw without causing major flooding, how do you ensure that?

@Deep Snow please It would be lovely to play "God" and create extreme weather conditions across large parts of the country!  For extreme snowfall I would have a SSW event over the Arctic creating blocking highs over Greenland to Scandinavia, this would draw in very cold air from northern Russia.  Next you need a big and deep depression (below 970 mb at centre) move in from the North Atlantic across northern France.  This means huge amounts of moist warm air carried into the depression from the SW and this rises and moves around the low-pressure ancountering the very cold Arctic Russian air over Britain.  Because of the intensity of the depression to the south of Britain this would result in large amounts of snow and blizzard conditions over the highly-populated Yorkshire, Lancashire, Midlands and South of the country.  The deep depression would still be far enough south so that mild air would fail to reach southern England but the size of the depression would encourage snow-inducing cyclogenesis as far north as the Scottish Borders. The deep low moves east into southern Germany and another moves in over France from the west- leading to more snow and blizzard conditions over England.

It is theoretically possible for this pattern to repeat every 48 hours or so and last from December through March, by the end of March some sixty level feet of snow could be deposited over large parts of Yorkshire, the Midlands and southern England with drifts over 200 ft (60 metres) in places! Such big drifts would fail to melt at all throughout the following summer.  Now that would be a Snowmageddon! 

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Posted
  • Location: Alston, Cumbria
  • Weather Preferences: Proper Seasons,lots of frost and snow October to April, hot summers!
  • Location: Alston, Cumbria

It must be possible with, for example, blocking highs in the Arctic with deep depressions moving over France in winter/early spring followed by northerlies from the Arctic throughout the summer for huge amounts of snow to fall in susceptible cooler parts of the country in winter/spring failing to melt away during the summer:  Ice sheets could build up in the North Pennines, the Peak District, the Welsh Brecon Beacons, even Dartmoor (not to mention the Scottish Highlands) from which menacing glaciers could flow threatening to obliterate parts of the North East, urban Lancashire, Manchester, Leeds, Cardiff....even Exeter!! This is possible IF ONLY we could get the most snow-productive weather patterns from autumn through spring followed by the most snow-preserving weather-patterns in summer for the next 200 years:  But likelihood of this actually happening- Zilch!!

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Posted
  • Location: Yorkshire Puddin' aka Kirkham, Lancashire, England, United Kingdom
  • Weather Preferences: cold winters, cold springs, cold summers and cold autumns
  • Location: Yorkshire Puddin' aka Kirkham, Lancashire, England, United Kingdom

For synoptics to give a blizzard effecting the whole country try these suspects:-

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