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White Meadows
11 January 2024 16:52:24

I’d expect them to come up here in a couple of months. On a different note the timing of this initial northerly has been remarkably consistent on the model output even if what follows it has not been as clear cut.

Originally Posted by: doctormog 


Not if it means waiting til next winter of course 🤣🤣
doctormog
11 January 2024 16:54:02

Not if it means waiting til next winter of course 🤣🤣

Originally Posted by: White Meadows 



For daffodils? I’m not entirely sure of the point you are attempting to make.
fairweather
11 January 2024 16:55:10

Hi Tally - I feel your frustration where you are on the English Riviera. I don't think the models have been poor, but what we see is understandably affected by our expectations. After some of the output of recent days it would be disappointing not to see at least a bit of snow next week but I have a feeling the MetO will now start the process of easing away from the wintry outlooks in their extended texts today. If you are a fan of GFS then it might be some weeks before the next opportunity of HLB and a cold flow returns to model land - and the days are getting longer.
I might be wrong of course - the next GFS OP might show a snow-laden Northeasterly for everyone but even if it did I don't think the outlook would be any clearer.
I have been very quiet with my forecast group about next week - as it stands that was a wise move.

Originally Posted by: nsrobins 


I should have been more circumspect. I went out today and told some fellow birdwatchers there was a good chance of snow next week and it wasn't the Express saying it!
S.Essex, 42m ASL
Retron
11 January 2024 16:56:20

UKMO 168 chart is pretty special 😍

Originally Posted by: Whiteout 


Hmm, it's got that ICON-esque multiple centres thing going on - a case perhaps of trying to be too detailed?

As a whole, though, that just screams instability, with hefty snow showers pretty much anywhere!

https://images.meteociel.fr/im/24/28545/ukmo_0_168ixz4.png
UserPostedImage 

 
Leysdown, north Kent
fullybhoy
11 January 2024 17:01:48

The iPhone app uses the IBM model. I'm not sure if that is available anywhere.

Originally Posted by: Rob K 



iPhone app was showing 7c for here a week on Saturday during the day…….its now showing   minus 1c lol
Aldo
Glasgow 165m/asl
 
Polar Low
11 January 2024 17:02:31
[quote=Retron;1560633]Hmm, it's got that ICON-esque multiple centres thing going on - a case perhaps of trying to be too detailed?

As a whole, though, that just screams instability, with hefty snow showers pretty much anywhere!

https://images.meteociel.fr/im/24/28545/ukmo_0_168ixz4.png
UserPostedImage 

 The thing is no way is that 2 low coming to far North from that position.
it screams cold continuing. 
gfs members look all over the place by 150
looking forward to what ecm decision is on 12z
 
Rob K
11 January 2024 17:03:28
Still plenty of time for changes but from thnking about Scandi highs in the longer term, it now looks as though the most likely scenario is an extremely unsettled and LP dominated spell from the end of next week, with a gradual return to normal temps (and lots and lots of rain)
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." — Jerome K. Jerome
fairweather
11 January 2024 17:06:56

Dreadful grammar aside, I've highlighted the bit which stands out to me. That's the first mention of the breakdown, and the fact they mention it being "likely" means there's relatively high confidence in it happening.

Bah, I was hoping for a better outlook, one more conducive to a longer cold spell.
 

Originally Posted by: Retron 


Yes, it is backed up by the GFS ensembles showing a few cold days for Monday, then, whilst a spread all of the perts trend milder. Even Scotland now looks like a decent 5 days then warming up. There has been cross model support for a northerly plunge and intra models run after run. There have only been minor blips - till now. It is starting to look like the default UK cold snap of a few days, maybe some snow but prolonged cold is almost off the agenda. As usual 3 days out. Or could this be the year when the models go in reverse during the initial cold?
S.Essex, 42m ASL
doctormog
11 January 2024 17:11:23
Again by the time you get to next Friday the GFS op run is significantly milder than the ensemble mean which paints a chillier picture at that time point: https://www.wetterzentrale.de/maps/GFSAVGEU12_192_2.png  
Crepuscular Ray
11 January 2024 17:13:22
Can I just follow MetO please? On the 18th (168hr) there is still a strong north flow with -10 uppers in N Scotland and -5 well clear of the south coast

I'm in the Lakes with friends 19th-21st. Would be nice if the Fells are white and the Lakes frozen 🤞🤞

Can't look at GFS......it would be wet and windy 🤢
Jerry
Edinburgh, in the frost hollow below Blackford Hill
Downpour
11 January 2024 17:14:15

Ah that again. It's only winter until the Equinox (which is the 20th March this year) for:
1) Druids
2) People hoping to see a decent snowfall before 'winter' is over

For all other purposes, including and most importantly data collection (astronomical seasons are unequal lengths) and analysis, scientific description and general common sense, winter is Dec, Jan and Feb
 

Originally Posted by: nsrobins 



Aren't Met Office 'seasons' also unequal lengths?

Interestingly, even Exeter accepts the astronomical seasons. I'm not sure why they cause such consternation on here. 

https://www.metoffice.gov.uk/weather/learn-about/weather/seasons/summer/when-does-summer-start  
Chingford
London E4
147ft
Taylor1740
11 January 2024 17:15:04

Yes, it is backed up by the GFS ensembles showing a few cold days for Monday, then, whilst a spread all of the perts trend milder. Even Scotland now looks like a decent 5 days then warming up. There has been cross model support for a northerly plunge and intra models run after run. There have only been minor blips - till now. It is starting to look like the default UK cold snap of a few days, maybe some snow but prolonged cold is almost off the agenda. As usual 3 days out. Or could this be the year when the models go in reverse during the initial cold?

Originally Posted by: fairweather 


exactly, I try to remain as objective and balanced as I can, however I can't help but feel pessimistic about it now. Feels like the writing is on the wall for this so called cold spell now. 
NW Leeds - 150m amsl
MStewart
11 January 2024 17:15:10
Possible snow event from north west on latest meto at t114+?

https://www.wetterzentrale.de/de/topkarten.php?map=1&model=ukmhd&var=1&time=12&run=12&lid=OP&h=0&tr=6&mv=0#mapref 

The weekend northerly looks like more intense cold and a more southerly reach on this run too
Mark
Twickenham
12m ASL
Downpour
11 January 2024 17:15:45

Still plenty of time for changes but from thnking about Scandi highs in the longer term, it now looks as though the most likely scenario is an extremely unsettled and LP dominated spell from the end of next week, with a gradual return to normal temps (and lots and lots of rain)

Originally Posted by: Rob K 



Yes, that is the great fear. I think White Meadows outlined this risk earlier this week. Let us hope it doesn't transpire. 
Chingford
London E4
147ft
Polar Low
11 January 2024 17:16:00

Still plenty of time for changes but from thnking about Scandi highs in the longer term, it now looks as though the most likely scenario is an extremely unsettled and LP dominated spell from the end of next week, with a gradual return to normal temps (and lots and lots of rain)

Originally Posted by: Rob K 



FWIW gfs mean at 7 days does not look mild to me also bear in mind with such uncertainty it’s important not to take to much notice of any particular run from gfs at the moment certainly not until the first lot of energy is resolved 
https://www.meteociel.fr/modeles/gefs_cartes.php?code=31&ech=162&mode=0&carte=0&ext=0 
 
Crepuscular Ray
11 January 2024 17:16:18

Again by the time you get to next Friday the GFS op run is significantly milder than the ensemble mean which paints a chillier picture at that time point: https://www.wetterzentrale.de/maps/GFSAVGEU12_192_2.png  

Originally Posted by: doctormog 



Yes that mean has the -5 850 clear of the south coast too! Why is the Op so different?
Jerry
Edinburgh, in the frost hollow below Blackford Hill
doctormog
11 January 2024 17:16:49

Can I just follow MetO please? On the 18th (168hr) there is still a strong north flow with -10 uppers in N Scotland and -5 well clear of the south coast

I'm in the Lakes with friends 19th-21st. Would be nice if the Fells are white and the Lakes frozen 🤞🤞

Can't look at GFS......it would be wet and windy 🤢

Originally Posted by: Crepuscular Ray 



Look at ensemble mean instead and it will show even that model isn’t painting a mild picture at that time point.

https://www.wetterzentrale.de/maps/GFSAVGEU12_198_5.png  
doctormog
11 January 2024 17:18:59

Yes that mean has the -5 850 clear of the south coast too! Why is the Op so different?

Originally Posted by: Crepuscular Ray 



It is one of the mildest options. I suspect with the higher resolution it is picking up on different features with every operational run and many of these drag milder air into the mix. It doesn’t however show that much consistency in detail just that it will be milder and more unsettled than the majority of the rest of the output. The question is, is it correct to do so? I doubt we will know until the start of next week.
Chunky Pea
11 January 2024 17:19:23

Again by the time you get to next Friday the GFS op run is significantly milder than the ensemble mean which paints a chillier picture at that time point: https://www.wetterzentrale.de/maps/GFSAVGEU12_192_2.png  

Originally Posted by: doctormog 



It's really hard to see where any serious mild weather would come from afterward even by just going by that single chart. Any possible unsettled spell in the medium term looks more of the occluded (yukky) type than the more usual warm/cold. 
Current Conditions
https://t.ly/MEYqg 


"You don't have to know anything to have an opinion"
--Roger P, 12/Oct/2022
ballamar
11 January 2024 17:29:36
UKMO has some intriguing low dew points on this run for northern areas
doctormog
11 January 2024 17:33:56

UKMO has some intriguing low dew points on this run for northern areas

Originally Posted by: ballamar 



A bit chilly at times too. 

UserPostedImage
Arbroath 1320
11 January 2024 17:42:11

iPhone app was showing 7c for here a week on Saturday during the day…….its now showing   minus 1c lol

Originally Posted by: fullybhoy 



The projected maximum day temperatures predicted for my area (Highland Perthshire) this year so far by Meto, BBC etc, have been way overestimated. We've been frozen solid for a week now with the max temperature not getting anywhere near 0c over that time frame. The predicted max's were 2-4c this week.

Back to the models and we're not really any further forward today on what happens next week post arctic plunge. All I would say is that the GFS looks out of step in terms of how progressive it's output is in bringing in the Atlantic train of LPs next week. Not so say it's wrong of course, but it must be a less favoured outcome based on the wider MO. 

 
GGTTH
Crepuscular Ray
11 January 2024 17:45:30

A bit chilly at times too. 

UserPostedImage

Originally Posted by: doctormog 



-14 C on my house in south Edinburgh and also around the Lakes 😮 That should ensure a wintry scene in The Lakes on the 19th.....if I can get there!! Is that a -25 C in the Southern Uplands 😲
Jerry
Edinburgh, in the frost hollow below Blackford Hill
Ally Pally Snowman
11 January 2024 17:50:42

A bit chilly at times too. 

UserPostedImage

Originally Posted by: doctormog 



Wow approaching record cold. Obviously significant snow on the ground.
 
Bishop's Stortford 85m ASL.
Essan
11 January 2024 17:54:11

-14 C on my house in south Edinburgh and also around the Lakes 😮 That should ensure a wintry scene in The Lakes on the 19th.....if I can get there!! Is that a -25 C in the Southern Uplands 😲

Originally Posted by: Crepuscular Ray 



Yes it is.   And given the wide area with -24 to -25 being shown there, if that came off I would expect some spots to be approaching UK records.   
Andy
Evesham, Worcs, Albion - 35m asl
Weather & Earth Science News 

Anyone who is capable of getting themselves made President should on no account be allowed to do the job - DNA

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