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Global Warming
Wednesday, December 30, 2020 12:33:20 PM

This thread is for all comments, discussion and analysis of temperatures in the UK during January, with particular emphasis on the Central England Temperature (CET), for the simple reason that it is the longest running temperature series in the world with over 360 years of data. But you can comment on any interesting temperature statistics or data from across the UK, including your own back yard. 


For those taking part in the competition all CET predictions for both January and for 2021 as a whole should be sent directly to me via the forum private message system. Do not post them directly into the thread. 


Historic CET summary for January 


1981-2010 4.4C (30 years)  


1991-2020 4.7C (30 years)  


2001-2020 4.7C (last 20 years)  


Last January was very warm with a CET of 6.4C. The previous year was slightly below average at 4.0C. The last very cold January was 2010 with 1.4C. Could we challenge that this year?  


Here is a chart of the January CET for all years since 1961


UserPostedImage


Direct link to larger version of the chart


Current model output   


First half of January looks cold. Lots of scatter by mid-month but that is quite normal at that range. General prognosis is cold for the foreseeable future.


GFS 850s https://www.wetterzentrale.de/de/show_diagrams.php?model=gfs&var=2&geoid=49069&lid=ENS&bw=


GFS T2m https://www.wetterzentrale.de/de/show_diagrams.php?geoid=49069&model=gfs&var=5&run=6&lid=ENS&bw=


ECM looks to be similar to GFS - i.e. cold. 


ECM ENS http://cdn.knmi.nl/knmi/map/page/weer/waarschuwingen_verwachtingen/ensemble/detail/ensemble-verwachtingen-detail10.png


Met Office contingency planners outlook


https://www.metoffice.gov.uk/binaries/content/assets/metofficegovuk/pdf/business/public-sector/civil-contingency/3moutlook-jfm-v1.pdf


Probabilities favour something slightly above average for January. But the likelihood of a cold January is higher than in recent years. Precipitation  outlook is close to the mean - very slightly above average.

Global Warming
Thursday, December 31, 2020 11:13:58 AM

Here is a first look at the January CET tracker


UserPostedImage


Chart1


UserPostedImage


Chart2

SJV
  • SJV
  • Guest Topic Starter
Thursday, December 31, 2020 2:31:57 PM
Tough one really! How cold to go?

I've gone cold but not excessively so. Had I gone for a crazy low CET the weather Gods would have seen to an exceptionally mild January because that's how the weather works in this country 😉
Stormchaser
Thursday, December 31, 2020 5:44:46 PM

Liking the lack of comment on that CET tracker .


This certainly is a tricky start to the year for the competitors, with a cold pattern already in place prior to expected influence from a sudden stratospheric warming that will either sustain/intensify the cold setup or cause it to shift away from us.


If you have any problems or queries relating to TWO you can Email [email protected]

https://twitter.com/peacockreports 
2023's Homeland Extremes:
T-Max: 30.2°C 9th Sep (...!) | T-Min: -7.1°C 22nd & 23rd Jan | Wettest Day: 25.9mm 2nd Nov | Ice Days: 1 (2nd Dec -1.3°C in freezing fog)
Keep Calm and Forecast On
kendalian
Thursday, December 31, 2020 11:30:41 PM

It's snowing here (Leyland) as I put my entry in....

Col
  • Col
  • Advanced Member
Friday, January 1, 2021 7:45:04 AM
Is there a period of grace for getting entries in for this month?
If so I will send my prediction in.
Col
Bolton, Lancashire
160m asl
Snow videos:
http://www.youtube.com/channel/UC3QvmL4UWBmHFMKWiwYm_gg
Global Warming
Friday, January 1, 2021 9:10:52 AM

Is there a period of grace for getting entries in for this month?
If so I will send my prediction in.

Originally Posted by: Col 


Yes. It is absolutely fine to send in predictions during the course of today.

Col
  • Col
  • Advanced Member
Friday, January 1, 2021 11:39:49 AM


 


Yes. It is absolutely fine to send in predictions during the course of today.


Originally Posted by: Global Warming 


Thanks!


PM just sent in and it's quite a month to predict No good just going for average plus a degree or so this month that's for sure. I imagine there will be quite a spread of predictions and I look forward to seeing what they are. I wonder if anyone will go for a sub-zero month? Unliikely of course but not completely beyond the bounds of possibilty.


 


Col
Bolton, Lancashire
160m asl
Snow videos:
http://www.youtube.com/channel/UC3QvmL4UWBmHFMKWiwYm_gg
Caz
  • Caz
  • Advanced Member
Saturday, January 2, 2021 6:59:29 AM


Liking the lack of comment on that CET tracker .


This certainly is a tricky start to the year for the competitors, with a cold pattern already in place prior to expected influence from a sudden stratospheric warming that will either sustain/intensify the cold setup or cause it to shift away from us.


Originally Posted by: Stormchaser 

We’re probably all a bit gobsmacked!  Usually the weather at the turn of the month tricks us with our predictions but it seems a bit different this month.  It’s hard to believe we could get a well below average CET, after months of above average!  
Happy New Year and good luck everyone!  


Market Warsop, North Nottinghamshire.
Join the fun and banter of the monthly CET competition.
Global Warming
Saturday, January 2, 2021 10:46:36 AM

Happy New Year everyone. Thanks everyone for your lovely comments and for joining the 2021 competition. We have just over 40 entries so far. If anyone would still like to join I will give you until the end of today to send me a PM.


Also if you have not yet made a prediction for the 2021 annual CET and would like to do so, I will keep this open for another couple of days.


Here are the predictions for January. A nice spread to start the year.


UserPostedImage


Chart 1

ARTzeman
Saturday, January 2, 2021 10:51:38 AM

Met Office Hadley       0.5c.      Anomaly     -3.0c Provisional to 1st.


Metcheck                    1.23c     Anomaly     -2.92c


Netweather                 1.77c     Anomaly     -2.44c


Peasedown St John    1.4c       Anomaly     -3.5c.  






Some people walk in the rain.
Others just get wet.
I Just Blow my horn or trumpet
Taylor1740
Saturday, January 2, 2021 1:36:46 PM
Sorry GW I actually meant + 2.5c!
NW Leeds - 150m amsl
Spring Sun Winter Dread
Saturday, January 2, 2021 7:14:34 PM
I can't believe I'm so high up the table with 3.7C !
I've been led astray by cold looking output at the start of winter months that have then gone on to be average to mild too many times to trust this one not to flip in the second half!
Col
  • Col
  • Advanced Member
Sunday, January 3, 2021 6:32:15 AM

And I'm surprised I'm so low down with 2.31C. I thought I was steering something of a middle course there, acknowledging the forecasts/models being cold for the reliable timeframe yet not getting away with the idea it would be a bitterly cold month.


Col
Bolton, Lancashire
160m asl
Snow videos:
http://www.youtube.com/channel/UC3QvmL4UWBmHFMKWiwYm_gg
Caz
  • Caz
  • Advanced Member
Sunday, January 3, 2021 10:12:18 AM


And I'm surprised I'm so low down with 2.31C. I thought I was steering something of a middle course there, acknowledging the forecasts/models being cold for the reliable timeframe yet not getting away with the idea it would be a bitterly cold month.


Originally Posted by: Col 

I very nearly went for 2.3c, using my usual prediction expertise - gut feeling or lucky numbers - 23rd January is my birthday!   


I turned it around though to 3.2c and I’m not sure that was wise!  So good luck Col!  


Market Warsop, North Nottinghamshire.
Join the fun and banter of the monthly CET competition.
ARTzeman
Sunday, January 3, 2021 11:39:49 AM

Met Office Hadley       0.5c        Anomaly       -3.0c Provisional to 2nd


Metcheck                    1.14c      Anomaly       -3.01c


Netweather                 1.63c      Anomaly       -2.58c


Peasedown St John    1.27c      Anomaly       -3.69c.     






Some people walk in the rain.
Others just get wet.
I Just Blow my horn or trumpet
Global Warming
Sunday, January 3, 2021 9:11:24 PM

Here is the final prediction table for January plus the annual CET predictions. For the latter I had to make a couple of minor changes to the later predictions where there was a duplication, so we have a unique winner when we get to the end of the year. There are a number of very similar predictions in the high 10.6's


UserPostedImage


Table 1


UserPostedImage


Table 2

Sussex snow magnet
Monday, January 4, 2021 10:32:39 AM
Thanks for all you efforts GW, have you got the table you posted last year with the cummulative records since the competition began?
Bolty
Monday, January 4, 2021 10:34:31 AM

Ah crud, I forgot about the annual CET.


Scott
Blackrod, Lancashire (4 miles south of Chorley) at 156m asl.
My weather station 
ARTzeman
Monday, January 4, 2021 11:07:50 AM

Met Office Hadley     1.0c     Anomaly       -2.4c provisional to 3rd.


Metcheck                  1.56c   Anomaly       -2.57c


Netweather               2.06c   Anomaly       -2.15c


Peasedown St John   1.5c    Anomaly       -3.4c.   






Some people walk in the rain.
Others just get wet.
I Just Blow my horn or trumpet
Saint Snow
Monday, January 4, 2021 11:23:54 AM


I very nearly went for 2.3c, using my usual prediction expertise - gut feeling or lucky numbers - 23rd January is my birthday!   


I turned it around though to 3.2c and I’m not sure that was wise!  So good luck Col!  


Originally Posted by: Caz 


 


Given latest model output, I think your 3.2c will be nearer the mark than 2.3c



I'm fairly content with my 3.6c at this stage.


 



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
Col
  • Col
  • Advanced Member
Monday, January 4, 2021 3:57:42 PM


 


 


Given latest model output, I think your 3.2c will be nearer the mark than 2.3c



I'm fairly content with my 3.6c at this stage.


 


Originally Posted by: Saint Snow 


We shall see, it's only day 4 and I'm not panicking yet. The second half of the month is still up for grabs and there is always the 'wildcard' of the SSW towards the end of the month to consider. As long as I can 'bank' some reasonable cold during the first half, dull & dreary days of 3/4C and temps a little below freezing would be fine to offset somewhat milder weather later.


Col
Bolton, Lancashire
160m asl
Snow videos:
http://www.youtube.com/channel/UC3QvmL4UWBmHFMKWiwYm_gg
Saint Snow
Monday, January 4, 2021 7:15:56 PM


 


We shall see, it's only day 4 and I'm not panicking yet. The second half of the month is still up for grabs and there is always the 'wildcard' of the SSW towards the end of the month to consider. As long as I can 'bank' some reasonable cold during the first half, dull & dreary days of 3/4C and temps a little below freezing would be fine to offset somewhat milder weather later.


Originally Posted by: Col 


 


If you're closer to the mark than me, I won't be complaining 



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
Caz
  • Caz
  • Advanced Member
Tuesday, January 5, 2021 6:21:25 AM


If you're closer to the mark than me, I won't be complaining 


Originally Posted by: Saint Snow 

Me neither, especially if it comes with white stuff!  


Market Warsop, North Nottinghamshire.
Join the fun and banter of the monthly CET competition.
ARTzeman
Tuesday, January 5, 2021 10:58:41 AM

Met Office Hadley        1.5c      Anomaly      -1.9c Provisional to 4th


Metcheck                      1.76c   Anomaly      -2.40c


Netweather                   2.38c   Anomaly      -1.83c


Peasedown St John     1.8c     Anomaly      -3.1c       






Some people walk in the rain.
Others just get wet.
I Just Blow my horn or trumpet

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