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Whiteout
13 January 2019 13:51:26


London snow row probably the highest it has been this winter.


https://www.theweatheroutlook.com/twoforecasts/ensemble-forecast.aspx?location=London


Also a few trenchers are starting to appear in the GEFS output. 


Originally Posted by: Brian Gaze 


For sure Brian, first time over 100! 102 now the new record  I hope Kieran keeps doing the Brighton tracker, interesting to watch. 


Home/Work - Dartmoor
240m/785 ft asl
doctormog
13 January 2019 14:01:41


 


For sure Brian, first time over 100! 102 now the new record  I hope Kieran keeps doing the Brighton tracker, interesting to watch. 


Originally Posted by: Whiteout 


I think the Inverness one has reached a high too, at 279 


Seriously though such “snow rows” are a good indication of the ensemble data at a glance and the trends are interesting.


If I had to make a forecast it would be for lots of mood swings, expectations, highs, lows, excitement, disappointment, a bit if reverse psychology and hopefully a bit of fun. As for the weather? Who knows!


Regardless of what if anything materialises it has been an interesting journey, a journey with a few more twists and turns to come no doubt. The trend is still clear in terms of temperature in the midterm and the ensemble data are encouraging if you want cold weather but the details are anyone’s guess as there is no overall consensus. 


It beats (charts showing) endless mild, wet and windy weather any day that’s for sure. 


Saint Snow
13 January 2019 14:56:23


 


I think the Inverness one has reached a high too, at 279 


Seriously though such “snow rows” are a good indication of the ensemble data at a glance and the trends are interesting.


If I had to make a forecast it would be for lots of mood swings, expectations, highs, lows, excitement, disappointment, a bit if reverse psychology and hopefully a bit of fun. As for the weather? Who knows!


Regardless of what if anything materialises it has been an interesting journey, a journey with a few more twists and turns to come no doubt. The trend is still clear in terms of temperature in the midterm and the ensemble data are encouraging if you want cold weather but the details are anyone’s guess as there is no overall consensus. 


It beats (charts showing) endless mild, wet and windy weather any day that’s for sure. 


Originally Posted by: doctormog 


 


Liverpool up to 134 on the 6z. Don't remember it being higher. Biggest day total is 18.



Martin
Home: St Helens (26m asl) Work: Manchester (75m asl)
A TWO addict since 14/12/01
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Aneurin Bevan
DPower
13 January 2019 15:03:08
Different scenarios playing out as one would expect when looking at mid to longer range but with by far the majority going for cold. Very encouraging signs. The models seem to be locking on to the strat downwelling so hopefully some even better synoptics to come over the coming days.
Still a little to early for any details but would like to see some better amplification from the gfs in the near term as per some of the gefs.
fairweather
13 January 2019 15:06:12


 If I had to make a forecast it would be for lots of mood swings, expectations, highs, lows, excitement, disappointment, a bit if reverse psychology and hopefully a bit of fun. As for the weather? Who knows!


Originally Posted by: doctormog 


Probably  the most accurate forecast of the winter so far. 


S.Essex, 42m ASL
roadrunnerajn
13 January 2019 15:11:41
Even Plymouth has got double figures on the snow row.... I need to sit down..
Germoe, part of the breakaway Celtic Republic.
Gooner
13 January 2019 16:08:04

GFS 120 



UKMO 120


Modele UKMO - Carte prévisions


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


Gooner
13 January 2019 16:11:22

UKM 144 Looks ok to me 


Modele UKMO - Carte prévisions


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


doctormog
13 January 2019 16:14:32
http://www.wetterzentrale.de/maps/GEMOPEU12_144_1.png 

I suspect there will be some very interesting scenarios on display later in the op runs and/or ensemble members.
Gusty
13 January 2019 16:24:24

Developments towards a much colder outcome have gathered pace today. The cold spell starts in just 4 days time thanks to the midweek polar incursion becoming trapped under an area of high pressure.


Nights will become very cold very quickly.


By as early as the latter half of next weekend disrupting troughs will be challenging our increasingly cold block.


Interesting times. 


 


Steve - Folkestone, Kent
Current conditions from my Davis Vantage Vue
https://www.wunderground.com/dashboard/pws/IFOLKE11 
Join Kent Weather on Facebook.
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Ally Pally Snowman
13 January 2019 16:36:30

slightly underwhelming 12z so far ukmo looks decent but its not cold at day 6, GEM probably the best looks good late on but 850s look marginal but GEM 850s always seem to warm. GFS is poor upto 216.


 


Bishop's Stortford 85m ASL.
doctormog
13 January 2019 16:37:16

I see the GFS op is still in some form of progressive random scenario generator mode. Yet again, regardless of what it shows down the line I think I will wait for the GFSP and even more so the ensemble data.


Edit: Ally that UKMO 120hr chart is cold enough.


DPower
13 January 2019 16:41:29
Gfs 12z op is pants. The run says no strat down welling. Clueless. Hopefully the ens and para will be more enlightening.
idj20
13 January 2019 16:42:12


Developments towards a much colder outcome have gathered pace today. The cold spell starts in just 4 days time thanks to the midweek polar incursion becoming trapped under an area of high pressure.


Nights will become very cold very quickly.


By as early as the latter half of next weekend disrupting troughs will be challenging our increasingly cold block.


Interesting times. 


 


Originally Posted by: Gusty 



It's looking a bit like us here at Kent biting into apples, the first couple or so not really tasting that great and then suddenly the third one is like "whoa! This could be the one". 

And then end up with gut rot.


Folkestone Harbour. 
Gavin D
13 January 2019 16:43:10

Big changes up north on 12z GFS look how more extensive the black is compared to 06z


Ally Pally Snowman
13 January 2019 16:44:10

Gfs 12z op is pants. The run says no strat down welling. Clueless. Hopefully the ens and para will be more enlightening.

Originally Posted by: DPower 


 


Similar to that dodgy ECM 12z we had yesterday . Sadly this outcome can't be ruled out entirely. 


 


Bishop's Stortford 85m ASL.
briggsy6
13 January 2019 16:45:34

it's amazing how much our expectations have lowered in the era of the "modern winter". After six weeks of mild to very mild dross, even the prospect of a few days of more seasonal temps is enough to get the coldies heartbeats racing. My waters tell me it won't last and winter 2018/9 will go down as yet another mild one- possibly close to record breaking when all is said and done.


Location: Uxbridge
doctormog
13 January 2019 16:47:18


it's amazing how much our expectations have lowered in the era of the "modern winter". After six weeks of mild to very mild dross, even the prospect of a few days of more seasonal temps is enough to get the coldies heartbeats racing.

Originally Posted by: briggsy6 


Have you actually looked at the charts over the last few days? 


Whether Idle
13 January 2019 16:47:22

Gfs 12z op is pants. The run says no strat down welling. Clueless. Hopefully the ens and para will be more enlightening.

Originally Posted by: DPower 


Copious quantities of caution required.  FI is going to shrink down to 120hrs, and, personally, as I have no expectations, nothing can disappoint me. 


Fascinating model watching, but much patience required methinks. For example, the pizza slice attack shown below will probably be gone come the 18z:



Dover, 5m asl. Half a mile from the south coast.
Gavin D
13 January 2019 16:50:12
Maybe Darren Betts words a few days ago are worth re posting

"Rather than the Beast from the East it may be bursts of colder air set forth from the north"
tallyho_83
13 January 2019 16:59:39

Up to +264


No sign of a Greenland Block or any HP over the Pole: - I do wonder if I should give the GFS OP run a break from looking at it because it never seems to be showing anything blocked or wintry in FI..!? To me this looks like it will end anything but blocked & cold. 



Then you have this:


AO goes negative but GFS charts show a really positive AO !?



Home Location - Kellands Lane, Okehampton, Devon (200m ASL)
---------------------------------------
Sean Moon
Magical Moon
www.magical-moon.com


doctormog
13 January 2019 17:02:53
I would stick to the ensembles at the moment given the recent nature of the GFS op runs in the medium term compared with the ensembles and other models. I think the GFSP is marginally better (in terms of reliability) but even then should not be considered in isolation.

http://www.wetterzentrale.de/maps/GFSPARAEU12_81_1.png  Messy but certainly not without interest.

Stolen Snowman
13 January 2019 17:07:56


it's amazing how much our expectations have lowered in the era of the "modern winter". After six weeks of mild to very mild dross, even the prospect of a few days of more seasonal temps is enough to get the coldies heartbeats racing. My waters tell me it won't last and winter 2018/9 will go down as yet another mild one- possibly close to record breaking when all is said and done.


Originally Posted by: briggsy6 


Interesting and somewhat brave post considering the model output at the min.


So yes it has been mild to date but why that means there can’t be a pattern change doesn’t make any sense.


This is one for saving and reposting in a few weeks time, whatever happens!


Statistics prove that the period just after records began witnessed some of the most extreme weather ever recorded. Records were being broken on a frequency that has not been repeated since.
Posting live from a pub somewhere in Burton upon Trent
LA2B MeridFlowEuro09
13 January 2019 17:13:07

.


Here I go!.


Weather is looking fine and less cold on Monday and Tuesday, and Tuesday rain with Low Pressure affects NW and North UK away from South and Central UK hmm.


On Wednesday 16th, a Triple Front Low Pressure pushes band of heavy rain and mild sector SE, and cold air moves Southwards in the Afternoon and during Wednesday night and Thursday to Midday, cold with frosty evening night and morning.


Some wintry snow showers are possible the more North you are, the better. Cold air with a few wintry showers around on Thursday.


On Friday 18th January, it looks like being dry but will be cold I think, but what time Friday less cold air comes from West moving SE with North and NE staying cold Friday night and Saturday- some rain then sleet and snow on the back end in West Central and NE UK, band of sleet and snow follows the rain.


Saturday the 19th should see High Pressure and staying cold with frost early and late... NE winds in SE England on Saturday morning to evening.


There is indication that High Pressure in the Central North Atlantic, GFS, ICON shows - in following week after that, Low Pressure GFS plunges SE on the Sunday PM and to Tuesday, with cold weather and chance of wintry sleet and snow showers possible.


But looking at the UKMO and ICON versus the GFS, from Friday 18th to Saturday 19th, the NW SE then East moving Low Pressure and then High Pressure for Saturday and Sunday differs for the said time versus the GFS showing Cold NW winds on the Sunday 20th January..  Possible that Thunder snow might be possible this Wednesday 16th in afternoon and through evening.


Climate is warming up, Scotland and N Ireland and North England still often gets some Winter frost, ice and snow, November to March, but the SE and South UK including S Central England and Wales, together with the West and North through the year, they sometimes get more rain than London and S SE England, where some longer dry fine spells without much heavy rain is seen every year.

The North Atlantic Sea often gets some much Colder Wintry conditions from November to March Months, and Mild SW and South winds tend to be more frequent over the East and SE of North Atlantic Sea, as the Azores High tends to stay in charge. 

With this warmth and heat, the Central and South UK has become mostly free of snow and frost.
Arcus
13 January 2019 17:20:02
Big spread in the GEFS on how that low behaves circa T+130. Not surprisingly, the Op is the mildest solution on the 850s. From there it really is a mess in terms of outcomes.
Ben,
Nr. Easingwold, North Yorkshire
30m asl

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