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Rob K
16 October 2023 09:06:11
I was planning to use the forecast settled week to go and redo the roof on my parents' summerhouse. I don't think that's going to happen!

Quite a potent easterly for the time of year on the GFS 00Z with snow cover across Germany and into a swathe of northern France on Sunday.
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
Rob K
16 October 2023 10:44:36
06Z GFS doesn't push Sunday's snow across France to the same extent but does show some early snow on the Welsh mountains (and plenty in the Alps). Heavy snow only just the other side of the Channel on Sunday morning.
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
Bow Echo
16 October 2023 12:09:12

...   Remembering the past Sunday newspaper forecasts used a wording, General Situation for the coming week which I read and end results all came off of any type of weather, never recalled a back track, delayed, downgrade,s or failed to turn up.   

Originally Posted by: Jiries 



I've been following these comments with regard the supposed better accuracy of forecasts back in the days of Ceefax and Oracle/Teletext ltd with interest. I followed Ceefax etc from its inception in Sep 1974 to its demise in Oct 2012. My recollection is that it was frequently wrong, and, except under the most static of high pressure systems the weather for the week ahead in newspapers was not worth the paper printed on. I'm sorry but the rose tinted spectacles you are using when trying to assure us that in the golden days of Ceefax the forecast was never wrong and even substantially better than now is incorrect.
Lets look at some facts from when I was working in weather forecasting field.
1972. We moved to an all singing all dancing 10 level model with a 300 km grid.
1982. Upgraded to 15 level 200 km grid, which was later resolved to 150 km grid
1987. The Great Storm of 15/16 October 1987.
We were using the above model for Global Forecasting (15 levels, 1 to 2 runs per day, 150 km grid.) There was also a regional (mainly local to the British Isles finer mesh model which was used experimantally for topographically induced wind fields and local visibilities) The model had placed into it from buoys, ships, aircraft and satellite some 1200 observations over 24 hours. This was processed at around 4 million calculations per second.
And because of the lack of observation in the area of the storms development, plus late arrival of key data, the track and rapid intensification of the storm were missed.
Nowadays I believe (cos I'm now retired and dont get to see all the latest stuff!) that UKV can resolve convective weather to 1.5 KM resolution and soundings through the whole thickness of atmosphere.
The Cray XC40 supercomputer is the one I belive is now in use and has 46000 cores, and top speed of processing of 16 Petaflops (1 petaflop = 10 to the 15 calcs per second.)
Well I could go on and bore everyone, but I think it is safe to say the the assertion that the models were better and more accurate back in the days of good old CEEFAX, are ..well. silly. If you want a good read about Met Office devlopments since the 1950's Try here... it gives tha facts rather tahn rose spectacled opinions. https://www.metoffice.gov.uk/weather/learn-about/how-forecasts-are-made/computer-models/history-of-numerical-weather-prediction 
 
Steve D. FRMetS
Burton Latimer, Kettering, Northants


scillydave
16 October 2023 14:54:51

I've been following these comments with regard the supposed better accuracy of forecasts back in the days of Ceefax and Oracle/Teletext ltd with interest. I followed Ceefax etc from its inception in Sep 1974 to its demise in Oct 2012. My recollection is that it was frequently wrong, and, except under the most static of high pressure systems the weather for the week ahead in newspapers was not worth the paper printed on. I'm sorry but the rose tinted spectacles you are using when trying to assure us that in the golden days of Ceefax the forecast was never wrong and even substantially better than now is incorrect.
Lets look at some facts from when I was working in weather forecasting field.
1972. We moved to an all singing all dancing 10 level model with a 300 km grid.
1982. Upgraded to 15 level 200 km grid, which was later resolved to 150 km grid
1987. The Great Storm of 15/16 October 1987.
We were using the above model for Global Forecasting (15 levels, 1 to 2 runs per day, 150 km grid.) There was also a regional (mainly local to the British Isles finer mesh model which was used experimantally for topographically induced wind fields and local visibilities) The model had placed into it from buoys, ships, aircraft and satellite some 1200 observations over 24 hours. This was processed at around 4 million calculations per second.
And because of the lack of observation in the area of the storms development, plus late arrival of key data, the track and rapid intensification of the storm were missed.
Nowadays I believe (cos I'm now retired and dont get to see all the latest stuff!) that UKV can resolve convective weather to 1.5 KM resolution and soundings through the whole thickness of atmosphere.
The Cray XC40 supercomputer is the one I belive is now in use and has 46000 cores, and top speed of processing of 16 Petaflops (1 petaflop = 10 to the 15 calcs per second.)
Well I could go on and bore everyone, but I think it is safe to say the the assertion that the models were better and more accurate back in the days of good old CEEFAX, are ..well. silly. If you want a good read about Met Office devlopments since the 1950's Try here... it gives tha facts rather tahn rose spectacled opinions. https://www.metoffice.gov.uk/weather/learn-about/how-forecasts-are-made/computer-models/history-of-numerical-weather-prediction 
 

Originally Posted by: Bow Echo 



Absolutely this.

Forecasts today are extraordinarily accurate compared to just 20 or 30 years ago. It's easy to forget that Forecasts of the past were not only less accurate they were also much, much less detailed. 
In truth I miss them a little as there are less surprises now than once there were .
Currently living at roughly 65m asl North of Cowbridge in the Vale of Glamorgan.

Formerly of, Birdlip, highest village in the Cotswolds and snow heaven in winter; Hawkinge in Kent - roof of the South downs and Isles of Scilly, paradise in the UK.
Rob K
16 October 2023 16:54:01
Talking of surprises, anyone in Belgium who doesn't watch weather forecasts could be in for a surprise. From 20C on Thursday to heavy snow on Sunday, if GFS is correct!
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
Retron
16 October 2023 17:07:06

Talking of surprises, anyone in Belgium who doesn't watch weather forecasts could be in for a surprise. From 20C on Thursday to heavy snow on Sunday, if GFS is correct!

Originally Posted by: Rob K 


No snow down here, of course, but GFS has 16C on Thursday followed by 6C on Sunday, with a strong ENE'ly and rain. That would feel absolutely perishing!
Leysdown, north Kent
Jiries
16 October 2023 17:48:57

Absolutely this.

Forecasts today are extraordinarily accurate compared to just 20 or 30 years ago. It's easy to forget that Forecasts of the past were not only less accurate they were also much, much less detailed. 
In truth I miss them a little as there are less surprises now than once there were .

Originally Posted by: scillydave 



If they were more accurate why they are backtracking, constant delays and downgrading too frequently even in very short range as well.  
Gandalf The White
16 October 2023 21:35:38

If they were more accurate why they are backtracking, constant delays and downgrading too frequently even in very short range as well.  

Originally Posted by: Jiries 



This simply isn’t true, Jiries.  I think you might be comparing chalk and cheese, because the forecasts are much more detailed now than in this supposed golden era you seem to recall.

I remember several occasions when the evening forecast was wrong within 12 hours. Once there was a forecast of overnight rain followed by a mild day with further rain showers: we awoke to a covering of snow.  On another occasion a forecast of a cloudy, wet day turned out to be sunny and dry (I recall that because I was due to play cricket and thought it was going to be cancelled). Then there was that Great Storm; one of the more dramatic short-term forecast fails.
Location: South Cambridgeshire
130 metres ASL
52.0N 0.1E


DEW
  • DEW
  • Advanced Member
17 October 2023 07:13:44
WX temp charts - for week 1 show below norm from Germany NE-wards, well above in the Balkans and a little above elsewhere. In week 2 Germany and Scandinavia warm up a little, but a large area of freezing weather appears over NE Russia (no surprise there). In both weeks plenty of rain in Atlantic coastal countries with an extension across France into Italy.

FAX - fronts being pushed N-wards by Storm Babet reaching the S Coast tomorrow (Wed) and by the end of the day LP centre 981mb English Channel. On Thu the fronts have reached S Scotland and a new LP has moved in from the W 975mb Bristol Channel. The fronts stick over Scotland while the LP after a brief foray into France is 985mb southern N Sea on Sat, bringing the fronts, now weaker, S-wards again.

GFS Op - does not show LP in English Channel on Wed but otherwise like FAX for this week. For next week the British Isles are on the edge of a controlling LP near Iceland which moves closer towards the end of the week, twin centres 980mb Bristol Channel and Hebrides Fri 27th, sitting over Britain and filling that weekend before a new LP develops and deepens S of Iceland Thu 2nd.

ECM - much as GFS; the 'controlling LP' stretches a trough across Britain and on Fri 27th the LP is a single-centre feature 980mb Scottish borders.

GEFS - mild around Thu 19 Oct, quite cold Sun 22nd with good ens agreement, then mean close to or a little below norm into Nov. Heavy rain in  in two blocks everywhere (except the far N of Scotland which has relatively little rain), starting Thu 18th and again a week later but also wet at other times; this quite general with less emphasis on E England/Scotland than in MetO warnings. Plymouth manages a snow row figure (of 1!) 31st Oct; Inverness has 2s and 3s.
War does not determine who is right, only who is left - Bertrand Russell

Chichester 12m asl
David M Porter
17 October 2023 09:00:54

Yes, indeed.

It reminds me of October 1986. It was generally quiet, dry and settled for first 17 days with abundant sunshine, and mostly quite warm, in fact very warm on 1st with max temperatures exceeding 22 C in Lincoln where I was living. 

However, for last 14 days, it turned very unsettled and wet, often windy, and on some days notably cold; it was only 9 C in Lincoln according to my thermometer on 22nd. The current model output (released on 15 Oct) resembles that of 2nd part of October 1986.

Originally Posted by: ozone_aurora 



Didn't October 1985 also have a pretty warm start? I'm fairly sure I read previously that at the start of that month, temperatures reached the high 20s in some places.
Lenzie, Glasgow

"Let us not take ourselves too seriously. None of us has a monopoly on wisdom, and we must always be ready to listen and respect other points of view."- Queen Elizabeth II 1926-2022
Gusty
17 October 2023 10:25:55

I've been following these comments with regard the supposed better accuracy of forecasts back in the days of Ceefax and Oracle/Teletext ltd with interest. I followed Ceefax etc from its inception in Sep 1974 to its demise in Oct 2012. My recollection is that it was frequently wrong, and, except under the most static of high pressure systems the weather for the week ahead in newspapers was not worth the paper printed on. I'm sorry but the rose tinted spectacles you are using when trying to assure us that in the golden days of Ceefax the forecast was never wrong and even substantially better than now is incorrect.
Lets look at some facts from when I was working in weather forecasting field.
1972. We moved to an all singing all dancing 10 level model with a 300 km grid.
1982. Upgraded to 15 level 200 km grid, which was later resolved to 150 km grid
1987. The Great Storm of 15/16 October 1987.
We were using the above model for Global Forecasting (15 levels, 1 to 2 runs per day, 150 km grid.) There was also a regional (mainly local to the British Isles finer mesh model which was used experimantally for topographically induced wind fields and local visibilities) The model had placed into it from buoys, ships, aircraft and satellite some 1200 observations over 24 hours. This was processed at around 4 million calculations per second.
And because of the lack of observation in the area of the storms development, plus late arrival of key data, the track and rapid intensification of the storm were missed.
Nowadays I believe (cos I'm now retired and dont get to see all the latest stuff!) that UKV can resolve convective weather to 1.5 KM resolution and soundings through the whole thickness of atmosphere.
The Cray XC40 supercomputer is the one I belive is now in use and has 46000 cores, and top speed of processing of 16 Petaflops (1 petaflop = 10 to the 15 calcs per second.)
Well I could go on and bore everyone, but I think it is safe to say the the assertion that the models were better and more accurate back in the days of good old CEEFAX, are ..well. silly. If you want a good read about Met Office devlopments since the 1950's Try here... it gives tha facts rather tahn rose spectacled opinions. https://www.metoffice.gov.uk/weather/learn-about/how-forecasts-are-made/computer-models/history-of-numerical-weather-prediction 
 

Originally Posted by: Bow Echo 



Thank you. This post is very welcomed and will surely put to bed these silly posts stating that forecasts were more accurate 30-40 years ago.
Steve - Folkestone, Kent
Current conditions from my Davis Vantage Vue
https://www.wunderground.com/dashboard/pws/IFOLKE11 
Join Kent Weather on Facebook.
https://www.facebook.com/stevewall69/ 



Saint Snow
17 October 2023 10:49:28

and will surely put to bed these silly posts stating that forecasts were more accurate 30-40 years ago.

Originally Posted by: Gusty 




I doubt it 🤣

Martin
Home: St Helens (26m asl) Work: Manchester (75m asl)
A TWO addict since 14/12/01
"How can wealth persuade poverty to use its political freedom to keep wealth in power? Here lies the whole art of Conservative politics."
Aneurin Bevan
johncs2016
17 October 2023 21:47:51
I see that the model are still very strongly backing the idea of easterly winds setting in from this coming weekend after Storm Babet finally gets out of the way.

Indeed, a lot of the charts for that period are showing some really good "if only it were winter" synoptics for around that time.

The main issue which I have with that of course, is that I would much rather be seeing that sort of setup a couple of months time, rather than just now at a time when it's still too early in the season for such a setup to actually be bringing any snow to this part of the world.

If we got that in December or January though, it might well be a completely different story in that regard.
 
The north of Edinburgh, usually always missing out on snow events which occur not just within the rest of Scotland or the UK, but also within the rest of Edinburgh.
picturesareme
18 October 2023 00:46:25
I'm surprised that this hasn't gotten some attention on here 😕

From the extended met office forecast:

"Temperatures are more likely to be above average, but perhaps trending closer to normal. Cooler later into November when blocking high pressure and easterlies are more likely. That said, as temperatures fall, particularly over the near continent, any winds from this direction may bring colder spells as the month progresses - perhaps more likely in northern and eastern areas."
DEW
  • DEW
  • Advanced Member
18 October 2023 07:14:53
WX charts repeat the trend from yesterday - for week 1 showing below norm from Germany NE-wards, well above in the Balkans and a little above elsewhere. In week 2 Germany and Scandinavia warm up a little, but a large area of freezing weather appears over NE Russia (no surprise there). In both weeks plenty of rain in Atlantic coastal countries with an extension across France into Italy - though becoming cooler over the Alps and the Balkans, and rain extending further east becoming heavy in Italy.

GFS Op - Storm Babet standing off west of Ireland today before changing direction to run eastwards up the Channel to 985 mb Belgium Sat 22nd, all the while with strong SE-lies and (from FAX) fronts moving N to stall over Scotland. That fills soon after and Britain receives a succession of LPs from the NW; 985mb Wales Tue 24th, 975mb Hebrides Thu 26th, 980mb N France Fri 27th, 995mb Ireland Mon 30th. This last drops S-wards, allowing HP from mid Atlantic to move to S Norway 1035mb  Fri 3rd with E/SE winds becoming a feature. Elsewhere LP over N Russia often linking with remnants of Atlantic LPs and HP over S Russia.

ECM - treats Babet similarly until Sat 22nd when its remnants take a final swipe at Scotland on Sun 23rd. Then it shows the Atlantic as less active, LP still dominating Britain but only one significant centre 985mb Wales Thu 26th

GEFS - temps soon declining to a cool spell Fri 21st then recovering to a little below norm and staying there into November (just a chance of a little milder near Thu 26th). Rain frequent and often heavy everywhere esp around Fri 21st and Thu 26th, a little less wet from the start of Nov.

 
War does not determine who is right, only who is left - Bertrand Russell

Chichester 12m asl
Jiries
18 October 2023 08:50:25

Thank you. This post is very welcomed and will surely put to bed these silly posts stating that forecasts were more accurate 30-40 years ago.

Originally Posted by: Gusty 



Not silly if the models kept back tracking, push backs, delayed or cancelled in the last minute as they done many times, the frequently are too much now so difficult to make plans as there no reliable source of forecasting that can be really accurate.   We not gone to Wales now because of the stupid models backtracked the settled to unsettled week.   In future will check the weather from the window and then go somewhere if nice.  
doctormog
18 October 2023 08:56:23

Not silly if the models kept back tracking, push backs, delayed or cancelled in the last minute as they done many times, the frequently are too much now so difficult to make plans as there no reliable source of forecasting that can be really accurate.   We not gone to Wales now because of the stupid models backtracked the settled to unsettled week.   In future will check the weather from the window and then go somewhere if nice.  

Originally Posted by: Jiries 



Do you think the Met Office research that Bow Echo (and myself previously) shared with you is inaccurate? Are their statistical analyses incorrect or flawed? Models changing with regularly updated input data do not mean they are flawed, simply that the data have been updated. Would you prefer in any situation for forecasts to stick to their original position when more data become available?
Jiries
18 October 2023 10:05:24

Do you think the Met Office research that Bow Echo (and myself previously) shared with you is inaccurate? Are their statistical analyses incorrect or flawed? Models changing with regularly updated input data do not mean they are flawed, simply that the data have been updated. Would you prefer in any situation for forecasts to stick to their original position when more data become available?

Originally Posted by: doctormog 



Too frequent backtracking nad push backs which is the main problem and not acceptable on today technology which should minimise that than in the early 2000's when backs track or push backs up to 1 week to 10 days was much less frequent.  I leave it there now as I am not changing my views about this.
White Meadows
18 October 2023 12:08:40

I'm surprised that this hasn't gotten some attention on here 😕

From the extended met office forecast:

"Temperatures are more likely to be above average, but perhaps trending closer to normal. Cooler later into November when blocking high pressure and easterlies are more likely. That said, as temperatures fall, particularly over the near continent, any winds from this direction may bring colder spells as the month progresses - perhaps more likely in northern and eastern areas."

Originally Posted by: picturesareme 



Surprising to see that narrative at such range. Easterlies are hard to be confident about, but perhaps the general picture later next month will end up being a repeat of May this year ie a true persistent easterly pattern which seemed very reluctant to budge. 
Jiries
18 October 2023 14:17:59

Surprising to see that narrative at such range. Easterlies are hard to be confident about, but perhaps the general picture later next month will end up being a repeat of May this year ie a true persistent easterly pattern which seemed very reluctant to budge. 

Originally Posted by: White Meadows 



Problem thiis climate are disorganized as any good set-up always in a very wrong time of the year.  If we had weeks of easterly last Spring occur in late November to early Jan, we would be looking at subzero days non-stop, snowfalls every now and then and extreme cold temps at nights.  All wasted.  It the matter of time to get a jack pot in a right season and today easterly feed in October seem very rare, alwasy zonal winds from the west full time.   Seen the chart showing the flow from Russia, via EU and UK then toward Greenland when it ends.
nsrobins
18 October 2023 16:17:31

Too frequent backtracking nad push backs which is the main problem and not acceptable on today technology which should minimise that than in the early 2000's when backs track or push backs up to 1 week to 10 days was much less frequent.  I leave it there now as I am not changing my views about this.

Originally Posted by: Jiries 



With respect but your assertion is scientifically incorrect, as has been discussed by others. Personally I’d rather know what’s coming and accept that any short-term adjustment is a consequence of better modelling and data processes, rather than take a three day forecast as verbatim and live in ignorance (which was more or less all we had in the early 80s).
And in addition, the premium rate ‘weatherline’ phone forecasts were ridiculously expensive 😂
Neil
Fareham, Hampshire 28m ASL (near estuary)
Stormchaser, Member TORRO
scillydave
18 October 2023 16:46:10

And in addition, the premium rate ‘weatherline’ phone forecasts were ridiculously expensive 😂



My mum went ballistic when she found out I'd used them🤣 It took me weeks of pocket money to pay the quarterly phone bill from the winter back.
Was so worth it though! 
Currently living at roughly 65m asl North of Cowbridge in the Vale of Glamorgan.

Formerly of, Birdlip, highest village in the Cotswolds and snow heaven in winter; Hawkinge in Kent - roof of the South downs and Isles of Scilly, paradise in the UK.
Rob K
18 October 2023 16:59:00
A big change in the GFS for the weekend - the cold plunge from the east that was forecast to pass across Germany and into Benelux is now way up in Scandinavia! No doubt a sign of what we have to look forward to in winter!

On the plus side, if everything is shifting northwards, perhaps my week in France won't be quite as wet as I feared....
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
Col
  • Col
  • Advanced Member
18 October 2023 17:14:27

And in addition, the premium rate ‘weatherline’ phone forecasts were ridiculously expensive 😂

Originally Posted by: scillydave 



My mum went ballistic when she found out I'd used them🤣 It took me weeks of pocket money to pay the quarterly phone bill from the winter back.
Was so worth it though! 



Ah yes, that brings me back! It could become quite addictive in the pre-internet era (mid-90s I guess) but those phone bills hurt and I was a supposedly responsible adult....
Col
Bolton, Lancashire
160m asl
Snow videos:
http://www.youtube.com/channel/UC3QvmL4UWBmHFMKWiwYm_gg
Col
  • Col
  • Advanced Member
18 October 2023 17:18:04

And in addition, the premium rate ‘weatherline’ phone forecasts were ridiculously expensive 😂

Originally Posted by: scillydave 



My mum went ballistic when she found out I'd used them🤣 It took me weeks of pocket money to pay the quarterly phone bill from the winter back.
Was so worth it though! 




Ah yes, that brings me back! It could become quite addictive in the pre-internet era (mid-90s I guess) but those phone bills hurt and I was a supposedly responsible adult....
Col
Bolton, Lancashire
160m asl
Snow videos:
http://www.youtube.com/channel/UC3QvmL4UWBmHFMKWiwYm_gg

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