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Quantum
  • Quantum
  • Advanced Member Topic Starter
25 August 2024 08:50:06
I wonder if we could use it as a meterological definition of Autumn. Anyway seems we will have a closed cyclonic circulation at 10hpa and 1hpa by the end of today:
UserPostedImage
(https://expert-images.weatheronline.co.uk/daten/proficharts/web/en/2024/08/25/basis00/nhem/z010/24082518_2500.gif)
Its birth location is over northern siberia but it wil migrate northwards over the next few days and come to sit near the north pole. The polar vortex will be weak to begin with but will quickly strengthen. Itl be a while before things downwell into the troposphere but in about a month the polar vortex should become prominent in the troposphere which means the jet will ramp up and the atlantic will well and truly return! Get ready for wind, rain and westerly winds!

2024/2025 Snow days (approx 850hpa temp): Total: 2 days with snow/sleet falling
18/11 (-6), 19/11 (-6)
2023/2024 Snow days (approx 850hpa temp): Total: 8 days with snow/sleet falling
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)
2022/2023 Snow days (approx 850hpa temp): Total: 7 days with snow/sleet falling.
18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)
2021/2022 Snow days (approx 850hpa temp): Total: 12 days with snow/sleet falling.
26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
idj20
25 August 2024 09:29:18

I wonder if we could use it as a meterological definition of Autumn. Anyway seems we will have a closed cyclonic circulation at 10hpa and 1hpa by the end of today:
UserPostedImage
(https://expert-images.weatheronline.co.uk/daten/proficharts/web/en/2024/08/25/basis00/nhem/z010/24082518_2500.gif)
Its birth location is over northern siberia but it wil migrate northwards over the next few days and come to sit near the north pole. The polar vortex will be weak to begin with but will quickly strengthen. Itl be a while before things downwell into the troposphere but in about a month the polar vortex should become prominent in the troposphere which means the jet will ramp up and the atlantic will well and truly return! Get ready for wind, rain and westerly winds!

Originally Posted by: Quantum 


Dude, we've already had all that in the past couple of days. ๐Ÿ˜‚
Folkestone Harbour.ย 
Brian Gaze
25 August 2024 10:22:55
Red shows the current westerly component of winds at 10hPa
 Screenshot 2024-08-25 112050.jpg You have insufficient rights to see the content.

Brian Gaze
Berkhamsted
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Windy Willow
25 August 2024 10:25:21

Red shows the current westerly component of winds at 10hPa
 Screenshot 2024-08-25 112050.jpg You have insufficient rights to see the content.

Originally Posted by: Brian Gaze 


Your link isn't working! It says "You have insufficient rights to see this content" lol
South Holland, Lincs 5m/16ft ASL

Don't feed the Trolls!!ย When starved of attention they return to their dark caves or the dark recesses of bridges and will turn back to stone, silent again!
Quantum
  • Quantum
  • Advanced Member Topic Starter
27 August 2024 06:57:11
Still extremely weak but now you can see the circulation across the whole arctic.
UserPostedImage
(https://expert-images.weatheronline.co.uk/daten/proficharts/web/en/2024/08/27/basis00/nhem/z010/24082706_2700.gif)
You can't really see much in the 10hpa wind charts yet, but we will in the next week.
2024/2025 Snow days (approx 850hpa temp): Total: 2 days with snow/sleet falling
18/11 (-6), 19/11 (-6)
2023/2024 Snow days (approx 850hpa temp): Total: 8 days with snow/sleet falling
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)
2022/2023 Snow days (approx 850hpa temp): Total: 7 days with snow/sleet falling.
18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)
2021/2022 Snow days (approx 850hpa temp): Total: 12 days with snow/sleet falling.
26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Crepuscular Ray
27 August 2024 07:04:07
I'm not allowed to see any of those images, the links don't work ๐Ÿค”ย  I get what you're saying but we are already into a wet and windy regime up here
Jerry
Edinburgh, in the frost hollow below Blackford Hill
Retron
27 August 2024 07:04:54
Zonal winds first went positive on Thursday, FWIW, a few days earlier than normal.
https://charts.ecmwf.int/products/extended-zonal-mean-zonal-wind?area=nh&base_time=202408220000 
Leysdown, north Kent
Chunky Pea
27 August 2024 11:29:52
Hopefully a signal of a dark, wild autumn and winter ahead โšกโšก
Current Conditions
https://t.ly/MEYqg 


"You don't have to know anything to have an opinion"
--Roger P, 12/Oct/2022
Saint Snow
27 August 2024 12:49:35

Dude, we've already had all that in the past several months. ๐Ÿ˜‚

Originally Posted by: idj20 




Corrected ๐Ÿ˜‰


(being serious, it's felt like there's been one for months, predominantly located over western Greenland and N/NE Canada, spewing blobs of low pressure towards the UK (and those being deflected on a more southerly trajectory by persistently higher-than-normal pressure over the Barents & Kara Seas)

Martin
Home: St Helens (26m asl) Work: Manchester (75m asl)
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