Arcus
18 July 2019 18:43:15

Originally Posted by: xioni2 


 


No, there is a strong cap and too much subsidence in the south on this run with zero cloud.


Anyway, this run has a finger licking 25C DP in your area on Thu afternoon.



Sorry, no - don't look at SBCAPE for those scenarios. Elevated storms left, right and centre on that run.


Anyway, all academic at this range! 


Ben,
Nr. Easingwold, North Yorkshire
30m asl
xioni2
18 July 2019 18:47:38

Originally Posted by: Arcus 


 Sorry, no - don't look at SBCAPE for those scenarios. Elevated storms left, right and centre on that run.


Anyway, all academic at this range! 



Yes of course, but I don't look at CAPE. I have access to its tephigrams and believe me there would be no cloud under this setup and no ascent.


 

Arcus
18 July 2019 18:48:20
In fact the more I look at that T+168 chart, the more a thing of beauty it becomes. Crazy stuff for storms.
Ben,
Nr. Easingwold, North Yorkshire
30m asl
Arcus
18 July 2019 18:49:42

Originally Posted by: xioni2 


 


Yes of course, but I don't look at CAPE. I have access to its tephigrams and believe me there would be no cloud under this setup and no ascent.


 



Well we'll agree to disagree. But take it from me, that T+168 chart is as good as it gets for severe storms.


Tephs at that range? 


Ben,
Nr. Easingwold, North Yorkshire
30m asl
Ally Pally Snowman
18 July 2019 18:51:19

Insane heat still there by 216h looks like the Azores builds in after as well perfect run. 


Bishop's Stortford 85m ASL.
TimS
  • TimS
  • Advanced Member
18 July 2019 18:52:24
Iā€™m with xioni2 on this - no storms, or cloud apart from some cirrus. No storms over France either so no imports. Then by Saturday, joy of joys, it looks like we may get a dry change and secondary high.
Brockley, South East London 30m asl
Ally Pally Snowman
18 July 2019 18:54:13

Let's hope this run is a trend setter as its very different to anything we've seen recently. 


 


Bishop's Stortford 85m ASL.
CreweCold
18 July 2019 18:56:32

Originally Posted by: TimS 

I’m with xioni2 on this - no storms, or cloud apart from some cirrus. No storms over France either so no imports. Then by Saturday, joy of joys, it looks like we may get a dry change and secondary high.


We just can't seem to get decent storms into the UK these days. Kev Bradshaw did some research to show how thunder days have decreased since the early 2000s, more especially in the 2010s.



Crewe, Cheshire
55 metres above sea level
Arcus
18 July 2019 18:57:07

Originally Posted by: TimS 

I’m with xioni2 on this - no storms, or cloud apart from some cirrus. No storms over France either so no imports. Then by Saturday, joy of joys, it looks like we may get a dry change and secondary high.


As I say all academic at this range. But if I'm the only one that can see massive storm potential on those ECM charts then it's time to shake the head and smile.


Ben,
Nr. Easingwold, North Yorkshire
30m asl
xioni2
18 July 2019 18:57:13

Originally Posted by: Arcus 


 Well we'll agree to disagree. But take it from me, that T+168 chart is as good as it gets for severe storms.


Tephs at that range? 



You can have a tephi at 10 days out if you fancy 


It's just a run anyway, but you can't derive everything from the Z500 etc, the structure is anticyclonic throughout the lower troposphere, there is a strong cap with a  trigger surface temperature on Wed/Thu for convection in the south in the mid-40s.


It reminds me a bit of the last time when I was told that it'd be impossible to have surface temps of mid-20s with T850>20.


 

xioni2
18 July 2019 18:58:14

Originally Posted by: Arcus 


 As I say all academic at this range. But if I'm the only one that can see massive storm potential on those ECM charts then it's time to shake the head and smile.



Oh it's a great setup for storms further north!

Arcus
18 July 2019 19:03:46

Originally Posted by: xioni2 


 


Oh it's a great setup for storms further north!



Yes, agreed on plume boundary potential, as I said before.


But Tephs at that range? Seriously? Not doubting they exist, but really?


Look deeper at whats occurring on those charts. If we had MUCAPE on ECM.....


Ben,
Nr. Easingwold, North Yorkshire
30m asl
Rob K
18 July 2019 19:09:48

Highest 2-metre temps on that ECM run are 37C on Friday.


https://weather.us/model-charts/euro/2019071812/buckinghamshire/max-temperature-6h/20190726-1800z.html


 


 


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." ā€” Jerome K. Jerome
Ally Pally Snowman
18 July 2019 19:19:53

Originally Posted by: Rob K 


Highest 2-metre temps on that ECM run are 37C on Friday.


https://weather.us/model-charts/euro/2019071812/buckinghamshire/max-temperature-6h/20190726-1800z.html


 


 



 


At 1pm though not the day max?


Bishop's Stortford 85m ASL.
Crepuscular Ray
18 July 2019 19:22:58

Originally Posted by: Arcus 


 


As I say all academic at this range. But if I'm the only one that can see massive storm potential on those ECM charts then it's time to shake the head and smile.



I'm with you Ben! Let's hope some move up the western side. I'll be in the Lakes šŸ‘


Jerry
Edinburgh, in the frost hollow below Blackford Hill
Tim A
18 July 2019 19:23:16
Crazy ECM run. 34c into West Yorkshire on Friday according to that run. Let's hope the 2m temp forecasts are better than the ECM snow totals forecasts
Tim
NW Leeds
187m asl

Ā My PWS 
Rob K
18 July 2019 19:30:23

Originally Posted by: Ally Pally Snowman 


 


 


At 1pm though not the day max?



 


That link is for the max temperature for the 6 hours up to 1800 UTC, or 7pm BST.


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." ā€” Jerome K. Jerome
Ally Pally Snowman
18 July 2019 19:39:12

Originally Posted by: Rob K 


 


 


That link is for the max temperature for the 6 hours up to 1800 UTC, or 7pm BST.



 


Ok thanks yes I see now still v hot. 


Bishop's Stortford 85m ASL.
Bertwhistle
18 July 2019 19:48:53

Unusually consistent signal across the GFS Ensemble members next Wednesday for surface temps to be very high; check this out at 18z - all above 30C in CSEngland apart from 4- 29, 28, 26 and the lowest a 24. 10 are 32C+ . Thought I'd clicked the wrong postage stamp at first when I saw a mean of 31! Now what's making all those outcomes so hot when the Op has ditched the heat by then?



Bertie, Itchen Valley.
'We'll never see 40 celsius in this country'.
Shropshire
18 July 2019 19:55:55

No ensembles yet, but I would look for the Op to be a huge outlier as early as T96/120


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