Yup. 

http://www.wetterzentrale.de/pics/Rtavn1921.gif

Next Saturday looks bitter , plenty of snow showers about

http://www.wetterzentrale.de/pics/Rtavn1923.gif

http://www.wetterzentrale.de/pics/Rtavn19217.gif

key moments on Gm

http://www.meteociel.fr/modeles/geme_cartes.php?&ech=126&mode=0&carte=1

http://modeles.meteociel.fr/modeles/gfs/runs/2014120512/gfsnh-10-384.png?12

Some warming showing its hand

That 552 is never getting to greenland.

http://www.wetterzentrale.de/pics/Rtavn2161.gif

http://www.wetterzentrale.de/pics/Rtavn21617.gif

Be a shock to the system

Will certainly feel cold in the wind, but would also be mostly dry away from exposed coasts. Typical boring northerly for most of England. Better for other areas of course. 

Once that northerly hits the charts start to resemble an ensemble mean chart, lots of spacing in the isobars, and eveything looking less severe.

I think its more to do with the variables associated with the cold shot and the charts are struggling to make sense of it.  It looks like GFS falls back to old reliable ie - inject a little more energy into the atlantic

Something tells me this wants to dive south and draw in an easterly.  But it doesnt quite get there...

Is that not the time point where the GFS enters its lower resolution section of charts?

Thunderstorms with snow? I believe that thunder can indeed occur with snow but I don't recall experience it in my lifetime.

Its good to see the number of members on site is over the 200 mark. That normally means somethings afoot and interest levels are high with the current model output

Oh, it's suddenly come alive in here now, but I can see why. However, the thing with northerlies is that I tend to be on the lee sheltered end of it with the best of the sunshine - not that it is a bad thing in itself! Assuming it does come off in the first place as it is a good week away in forecasting terms. 
 Also, I don't want to be a party pooper but don't forget there is a bit of rough and tumble to put up with beforehand in the form of widespread and locally severe westerly-type gales across the UK on Wednesday and into Thursday. That part is pretty much nailed on at this point.

Wonder what the mighty ECM will come up with in a couple of hours time.

happened during the lake effect snow in the US the other week.  Ive heard it happening in manchester back around 2002/3 where we had a couple of snow inducing northwesterly's.  The convective streamers were quite powerful back then.

Those showers would be drifting inland places like EA and N/E dont forget about the axis of the chart that Marcus posted.

http://www.meteociel.fr/modeles/gfs/royaume-uni/precipitations/192h.htm

I remember the Thunder snow event here several years back, we had a few inches in a very short space of time

The "thundersnow" event of January 2004 was quite widespread across England... take it you missed out IYBY.

Blimey was it really 10 years ago , seems like yesterday and it was a cracker here ....no pun intended

Seen a Cold Northerly GFS 12z, and the UKMO 12z Meteociel is More Cyclonic with intensity and Depth of Cold very Similar (p.m. 9th, more especially 10th to 11th, and it would drag in A Arctic plunge if we follow GFS, the UKMO showing it less North flow for Thursday.

I will want tiger to next Tuesday and hope that within following 48-72 hours the GFS and ECMWF and UKMO keep up this evolution.

Take care and do not turn up the H Y P E, IF is good but the B U T is something else we know this a lot.

Pacific, USA and Atlanic Big Weather Picture is trending very nice at the moment as has been since 22nd November, and the appearance of Antarctic Noctilucent Clouds plus the Stratoshoeric warming in the Northern Hemisphere if all goes to plan then very good things are getting on fine, Russia North, Central NE Siberia and Arctic High is reflecting it well, so are PV and Cold Arctic Lows NE and North Pacific but more greatly Northeast Canada through Greenland Iceland as well- the North and East USA High and Links to large Central Mid to W N Atlantic High that affects well to our SW to Azores WNW as well, NW Corner Cold Arctic PV Low track o North and Mid to far NE Atlantic SW Central Norwegian Sea and West to North UK via Iceland main Crossing to Norwegian Sea all this looks set to continue and having Wet and Windy Low Pressure heading regularly across to SW USA South USA then quickly head to NE USA Corner and dragging warm air to its SW and South SE in USA all this is well and truly great weather set up.

And Typhoon Cat 5 Hagupan 185 mph mean winds with 225 mph gusts is slow moving and expected to cross East and Central Phillipines and track is sa

e as TS Haiyaan the Filipino's are calling this one Ruby and Haiyaan for them had a different name.

A Large Long Cold Front is in the Western NW Atlantic and right Upto SE Greenland Sea toward SW Iceland that is Sunday and Monday's spell of wintry showers and sunshine spells, with a frosty Sunday/ Monday night.

1987 springs to mind for us folk in EA

It has its own Written history most folk around here talk about it today who are not even weather nuts like me

http://en.wikipedia.org/wiki/January_1987_Southeast_England_snowfall

Towards the end of the 12z you can see high pressure exerting itself at higher latitudes to our North West, Eastern Canada across to Greenland. A sign the PV is migrating east / reducing in strength.

http://jpwxcharts.blogspot.co.uk/2014/02/blog-post.html

I have a hunch we'll be looking north and north east, rather than at standard easterly continental air later this month.

Well this is a bit exciting... another huge adjustment SW in the U.S. low on the GFS 12z op run changes the game significantly, with the mid-Atlantic ridge able to build up towards Greenland rather than being flattened and sent toppling toward the UK.

I've used the Meteociel charts for easier comparison with the UKMO and GEM charts on the second row:

UKMO is not far off the GFS solution but the shortwave development on the western flank of the main trough is a lot more pronounced. On the other hand, the U.S. low is even further southwest than GFS has it.

GEM still has the low in the sort of location that GFS had it on the 00z op run.

The GFS run evolves into by far the most amplified solution seen so far in terms of the Atlantic pattern:

Cold enough for snow showers streaming down the eastern half of England and across most of Scotland.

As usual, the pattern suddenly starts flattening once into lower-res (+192 onward), but that doesn't stop the far more amplified setup beforehand from increasing the strength of the wave breaking into the stratosphere (the mid-Atlantic ridge nudging into Greenland is a real bonus), producing the strongest warming yet and continuing the trend of the day so far:

You can even see the strat. vortex starting to come apart as a result.

Remarkable developments! Now, will the tendency to progress things along a bit too quickly be countered by this trend towards stronger warming? It now starts off at days 9-10 so getting close to higher-res, amazingly enough. The really strong stuff takes until day 14, though, so best not to get too carried away...