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Victims of the 2017 Snow Blizzard Speak Out Some harrowing tales are emerging across the country this morning as the victims of the 2017 snow storm share their stories.  The whole of Norther

Just saw total accumulation maps (for next 48hrs) from latest euro4 model. Think I peed myself a little!

Guys - good luck with the snow potential over the next few days  cameras at the ready!

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Just a quick undate , 

Looking over the latest data .There appears to be two main areas of interest in relation to organised snowfall. Firstly the running wave along southern counties should give some back edge snow as it clears given the depth of cold behind.The second feature is an embedded mid-level shortwave that moves across the country from north to south from above 4 to 8 pm . This should give good accumulations in many places. The only issue is how east the precip goes, that will be a nowcast as all models differ on placement. There is be also the standard sea effect snow showers running into the north and west most of the day.  

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8 minutes ago, BIG LAD said:

was 3.5c when i got home from work at 6.30 so temps need to fall a good bit for snow to lay. can we expect any snow before midnight?

The all elusive 528 DAM line should be in over the north by about 00z. Precip should be of mostly of snow from there onward. 

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33 minutes ago, rory o gorman said:

The all elusive 528 DAM line should be in over the north by about 00z. Precip should be of mostly of snow from there onward. 

What is a 528 DAM line  -please excuse my ignorance

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5 minutes ago, Moonbeem said:

What is a 528 DAM line  -please excuse my ignorance

Simply put it's the thickness between the 500-1000 hpa layer, It's a strong indicator on the depth of cold in an airmass, generally under 528 is needed as a minimum, but the lower it gets the higher the probability of precip being snow. 

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9 minutes ago, Moonbeem said:

What is a 528 DAM line  -please excuse my ignorance

 

Pressure decreases with altitude, and thickness measures the difference in height between two standard pressure levels in the atmosphere. It is proportional to the mean temperature of this layer of air, so is a useful way of describing the temperature of an airmass.

Weather charts commonly show contour lines of 1,000-500 hPa thickness, which represent the depth (in decametres, where 1 dam = 10 m) of the layer between the 1,000 hPa and 500 hPa pressure levels. Cold, polar air has low thickness, and values of 528 dam or less frequently bring snow to the UK. Conversely, warm, tropical air has high thickness, and values in excess of 564 dam across the UK often indicate a heatwave.

***from Met Office website

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Ive been signed up for a while but today 1st time ive posted - always have loved my weather (be it good or bad) - always looked at pressure charts etc but i must say ive learned a hell of alot today - thank you all :)

 

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22 minutes ago, Moonbeem said:

It just all seems very patchy hit or miss atm - im doing a snow dance here now :)

 

Most forecasts have the snow arriving around 10/11pm tonight. The BBC weather at 7pm showed some pretty intense showers plus bands of snow pushing in the north and west tomorrow which stretched the length and breadth of the country. @Rocheydub, looks like you may even see an odd flake or two as well!!

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2 minutes ago, Sperrin said:

Most forecasts have the snow arriving around 10/11pm tonight. The BBC weather at 7pm showed some pretty intense showers plus bands of snow pushing in the north and west tomorrow which stretched the length and breadth of the country. @Rocheydub, looks like you may even see an odd flake or two as well!!

Fingers crossed for us all esp Rochey - i not be greedy (tho id love a plastering) just a decent bit ------ plz plz plz snow Gods  lol lol

 

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Living in Belfast and temp now is 4.2 so gradually the surface temp is dropping.  For those Snow-lovers (like myself) the great news is that the 500-850hpa temp is also dropping further, thus the precipitation moving across the province tonight and tomorrow will be falling as snow to low levels. The 'dam' is already at -5 right across a large swathe of the UK, so rain and sleet are less likely. Since there isn't a weather front crossing Northern Ireland tonight and tomorrow means we just get the precipitation from showers (sourced from troughs). Will be good though to have some nice snowball fights. :D

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