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fairweather
05 December 2017 18:35:53


It's starting to look as though a less cold interlude is likely next week, but again we see signs of pressure rising in Scandinavia as we head towards Christmas.



Originally Posted by: Rob K 


Shame, a few days ago this weekend was looking like the bread and butter but we are starting to slip back into our jam tomorrow mode now 


S.Essex, 42m ASL
Maunder Minimum
05 December 2017 18:43:33


 


Shame, a few days ago this weekend was looking like the bread and butter but we are starting to slip back into our jam tomorrow mode now 


Originally Posted by: fairweather 


Jam tomorrow is the main form of sustenance for us cold weather junkies I am afraid. We get jam today perhaps once a decade if we are lucky and are good boys and girls and have enough patience and stamina to wait for the delivery we all crave - snow, lying snow and the enjoyment of it.


Naturally, what we all crave at this time of year, is snow for Christmas and the charts do provide some seasonal prospects, we just have to keep our fingers crossed for the big day.


New world order coming.
Rob K
05 December 2017 18:50:50
Not much cheer for the southern half of the country on the ECM again. but far from bad charts for the UK.
Yateley, NE Hampshire, 73m asl
"But who wants to be foretold the weather? It is bad enough when it comes, without our having the misery of knowing about it beforehand." β€” Jerome K. Jerome
Brian Gaze
05 December 2017 18:57:19

Ecm 240 looks ok. Plenty of interest still from the models tonight although I think on balance we've tilted slightly further towards umbrellas and away from sledges in the mid to longer term. It's a marginal shift though and things could revert.



Brian Gaze
Berkhamsted
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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan
Arcus
05 December 2017 18:59:44
Rinse and repeat from ECM at 240.
The difference in the mid term compared to previous runs has been the reluctance of higher pressure to clear to the south, hence the lows taking a more northerly track.
Ben,
Nr. Easingwold, North Yorkshire
30m asl
Joe Bloggs
05 December 2017 19:05:37

I’m more intrigued by the short term outlook but this has the potential to deliver a LOT of snow to northern areas. 


http://www.wetterzentrale.de/maps/ECMOPEU12_120_1.png


http://www.wetterzentrale.de/maps/ECMOPEU12_144_1.png


http://www.wetterzentrale.de/maps/ECMOPEU12_120_2.png


As Q pointed out earlier uppers do not necessarily have to be below -5C in a setup like this and I think it has the potential to be a very disruptive event. 


GFS is remarkably similar.. 


http://www.wetterzentrale.de/maps/GFSOPEU12_114_2.png


http://www.wetterzentrale.de/maps/GFSOPEU12_114_10.png


http://www.wetterzentrale.de/maps/GFSOPEU12_114_4.png


Definitely one to watch. Leeds/Bradford area could certainly do wel as it stands, but that risk could slip south. 



Manchester City Centre, 31m ASL

doctormog
05 December 2017 19:05:59
At least it won’t be mild....?
Ally Pally Snowman
05 December 2017 19:07:04

Not much cheer for the southern half of the country on the ECM again. but far from bad charts for the UK.

Originally Posted by: Rob K 


 


Might be cold enough by day 10 LOL. 


It's marginal from day 5 so it wouldn't take much of a downward shift in temps. But at the moment its lots of cold rain for anywhere south of Manchester. 


 


Bishop's Stortford 85m ASL.
Whether Idle
05 December 2017 19:18:48

Not much cheer for the southern half of the country on the ECM again. but far from bad charts for the UK.

Originally Posted by: Rob K 


Looks like we are in a repeating pattern.  There will be little hope of snow for people of the south  in populous areas until this pattern changes.


Those in the northern portion of the UK should take their chances while they have them.  Somewhere like Sheffield  could do well this week, and the Peaks and northern Pennines. It will be good to see some snow pictures and attendant text from at least part of the community. 


Dover, 5m asl. Half a mile from the south coast.
ballamar
05 December 2017 19:18:59

At least it won’t be mild....?

Originally Posted by: doctormog 


going by some people it is 3-5 c below average is not enough for some!

White Meadows
05 December 2017 19:55:54
I Wish that Azores high would fook right off. It’s the Bain of our hopes to get cold in the south from any direction it seems to mess things up for us. What we need is some proper retrogression, a robust Scandy high evolution- hopefully this starts to recur from previous runs.
fairweather
05 December 2017 20:18:05


 


Jam tomorrow is the main form of sustenance for us cold weather junkies I am afraid. We get jam today perhaps once a decade if we are lucky and are good boys and girls and have enough patience and stamina to wait for the delivery we all crave - snow, lying snow and the enjoyment of it.


Naturally, what we all crave at this time of year, is snow for Christmas and the charts do provide some seasonal prospects, we just have to keep our fingers crossed for the big day.


Originally Posted by: Maunder Minimum 


Yep, I'm one of them 


S.Essex, 42m ASL
fairweather
05 December 2017 20:20:07

I Wish that Azores high would fook right off.

Originally Posted by: White Meadows 


........... but hopefully come back in the summer 


S.Essex, 42m ASL
Whether Idle
05 December 2017 20:25:10


 


........... but hopefully come back in the summer 


Originally Posted by: fairweather 


Scandi High Winter, Azores high with UK extension for summer.  Its not much to ask.


Dover, 5m asl. Half a mile from the south coast.
JACKO4EVER
05 December 2017 20:34:56
Well the 850's aren't much and as I said a day or two ago don't discount the ECM.....
Further hints of winter proper at day 10, all a little frustrating and repetitive if it's cold your after.
Arcus
05 December 2017 20:41:35

Well the 850's aren't much and as I said a day or two ago don't discount the ECM.....
Further hints of winter proper at day 10, all a little frustrating and repetitive if it's cold your after.

Originally Posted by: JACKO4EVER 


I think that's my four corners on the MOD thread bingo. 


Anyway, 12z ECM 850 ENS IMBY:



EDIT: Interesting that no ECM member goes for -10c 850s as per GFS even now.


Ben,
Nr. Easingwold, North Yorkshire
30m asl
doctormog
05 December 2017 20:42:28
Meanwhile after the next couple of days of mild then wild wether the EXM mean charts show the cold picture from late Thursday/Friday onwards.

https://ruc.noaa.gov/hfip/tcgen/2017/2017120512/ukm2.2017121212.168.lant.troplant.prp.fcst.gentracker.png 

A very interesting period of weather coming up with severe gales, rain, snow, frost and even ice days possible up north.
JACKO4EVER
05 December 2017 20:44:01
πŸ˜‚
Rob K
05 December 2017 20:46:53


 


EDIT: Interesting that no ECM member goes for -10c 850s as per GFS even now.


Originally Posted by: Arcus 


GFS seems to be pretty well out on its own with -10C 850s.


ARPEGE only reaches -6C in London. WRF-NMM only goes to -8C. Hard to tell from UKMO as it is between frames but probably -8C or so.


 


BTW the JMA isn't pretty this evening.


Yateley, NE Hampshire, 73m asl
"But who wants to be foretold the weather? It is bad enough when it comes, without our having the misery of knowing about it beforehand." β€” Jerome K. Jerome
Chunky Pea
05 December 2017 20:56:46


 


I think that's my four corners on the MOD thread bingo. 


Anyway, 12z ECM 850 ENS IMBY:


 


EDIT: Interesting that no ECM member goes for -10c 850s as per GFS even now.


Originally Posted by: Arcus 


Not sure if you are basing this on the chart you posted, but there could be a few -10's in there, as the shaded line represents the standard deviation of the full spread, rather than the full spread itself. 


Current Conditions
https://t.ly/MEYqg 


"You don't have to know anything to have an opinion"
--Roger P, 12/Oct/2022
Solar Cycles
05 December 2017 20:58:33

Meanwhile after the next couple of days of mild then wild wether the EXM mean charts show the cold picture from late Thursday/Friday onwards.

The UKMO 168 hour chart is interesting (but as ever difficult to get the full picture) https://ruc.noaa.gov/hfip/tcgen/2017/2017120512/ukm2.2017121212.168.lant.troplant.prp.fcst.gentracker.png

A very interesting period of weather coming up with severe gales, rain, snow, frost and even ice days possible up north.

Originally Posted by: doctormog 

Our own Gav P highlights all of this very nicely over on his YouTube channel, lots of uncertainty with regards to who sees what or anything at all come Sunday into Monday. Before that I think there’s a good chance many will wake up to a dusting of snow on Saturday Morning with such a unstable cold airflow. Looking further ahead and we need to,start looking NE as I alluded to the other day for height rises  here. Lots to excited about going forward

doctormog
05 December 2017 20:59:12


 


Not sure if you are basing this on the chart you posted, but there could be a few -10's in there, as the shaded line represents the standard deviation of the full spread, rather than the full spread itself. 


Originally Posted by: Chunky Pea 


That’s what I was thinking.


Chunky Pea
05 December 2017 20:59:28



A very interesting period of weather coming up with severe gales, rain, snow, frost and even ice days possible up north.

Originally Posted by: doctormog 


Rub it in why don't you. 


 



 


 


Current Conditions
https://t.ly/MEYqg 


"You don't have to know anything to have an opinion"
--Roger P, 12/Oct/2022
Gandalf The White
05 December 2017 21:07:24


 


GFS seems to be pretty well out on its own with -10C 850s.


ARPEGE only reaches -6C in London. WRF-NMM only goes to -8C. Hard to tell from UKMO as it is between frames but probably -8C or so.


 


BTW the JMA isn't pretty this evening.


Originally Posted by: Rob K 


GEM, on the other hand,  produces a gem of a run. 


Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


Chunky Pea
05 December 2017 21:14:20

Just looking at the ECM wind run, and there would appear to be a very sharp wind direction shift of almost 90 Deg with the passage of that cold from to tomorrow night into Thursday morning, more especially for the us here in Ireland and the northern half of the UK, which could suggest a possible squall like feature during the cold front passage?


Current Conditions
https://t.ly/MEYqg 


"You don't have to know anything to have an opinion"
--Roger P, 12/Oct/2022

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