The Weather Outlook

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KevBrads1
16 September 2018 05:31:51

Not Richardabdn giving that report........?


MANCHESTER SUMMER INDEX for 2021: 238

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KevBrads1
16 September 2018 05:35:04

MANCHESTER SUMMER INDEX for 2021: 238

Timelapses, old weather forecasts and natural phenomena videos can be seen on this site

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DEW
  • DEW
  • Advanced Member Topic Starter
16 September 2018 06:06:49

Helene tracking across Ireland on Monday as post-tropical storm

https://www.nhc.noaa.gov/?atlc

but with a small but significant chance of 40mph wind speeds as far away as central S England

https://www.nhc.noaa.gov/refresh/graphics_at3+shtml/023352.shtml?mltoa34#contents

 

Florence pt2 is all about rainfall and land flooding with the forecast 40" looking only too probable. By Wednesday Florence has recurved and is back on the Atlantic heading our way again as post-tropical storm. It doesn't seem worth posting in the model output thread with two of these storms active within a few days of each other!

 

Isaac dead, Joyce moribund, a new low-level un-named threat in southern Caribbean


War is God's way of teaching Americans geography - Ambrose Bierce

Chichester 12m asl

Quantum
16 September 2018 18:34:00

Well the models really screwed up on Helene's development. My video looks pretty embarrassing given what actually happened. Kudos to the guys at the NHC that got the intensity pretty much spot on despite all the models suggesting a much more intense and much later transitioning storm.

 


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

Rich mt
16 September 2018 21:49:28

Well the models really screwed up on Helene's development. My video looks pretty embarrassing given what actually happened. Kudos to the guys at the NHC that got the intensity pretty much spot on despite all the models suggesting a much more intense and much later transitioning storm.

 

Originally Posted by: Quantum 

No need to be embarresd Q, I watched your video and found it very intresting and appritiate your enthusiasm on here for these anomalies and their potential! Helene is still going to be a significant weather system for the UK of course, gales in some places, I will be watching with intrest as it passes over, what ever the weather. Its starting to feel quite humid out there already. 


Poole, Dorset
Lionel Hutz
17 September 2018 07:42:29

Well the models really screwed up on Helene's development. My video looks pretty embarrassing given what actually happened. Kudos to the guys at the NHC that got the intensity pretty much spot on despite all the models suggesting a much more intense and much later transitioning storm.

 

Originally Posted by: Quantum 

As Rich Mt wrote, there's nothing to be embarrassed about - the weather will do that to the best. As late as yesterday evening, NOAA was showing a 60% chance of TS force winds for my area. MetEireann is now predicting winds merely reaching to "fresh". So you weren't alone.


Lionel Hutz

Nr.Waterford , S E Ireland

68m ASL



Russwirral
17 September 2018 09:00:15
https://twitter.com/jenzhuscott/status/1041193839224975361?ref_src=twsrc%5Etfw 

Some of this footage is astounding. In a major city like HK, which i would argue is more developed than New York.

Imagine if a storm like this had hit NY? There would be Channel 4 documentaries coming out of every orifice


The Beast from the East
17 September 2018 14:56:15

the warm core in Helene is still visible

http://tropic.ssec.wisc.edu/real-time/mimic-tpw/natl/anim/latest72hrs.gif

 


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

Quantum
17 September 2018 15:23:22

the warm core in Helene is still visible

http://tropic.ssec.wisc.edu/real-time/mimic-tpw/natl/anim/latest72hrs.gif

 

Originally Posted by: The Beast from the East 

Does look like the storm briefly did transition to post tropical but then transitioned back to subtropical or tropical like. Even if that's the case the post tropical period was enough for the NOAA to loose interest in the storm, so it is as likely to be considered tropical as a medicane would be.

I was thinking the satellite presentation did not look completely extratropical.

 


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

Chunky Pea
17 September 2018 16:58:50

Not much going on here as the system passes over. Gusty at times with some sporadic bursts of rain. Uncommonly dark though under a dense sheet of low/mid-level stratiform cloud and very humid.


Patrick,

East Galway, Ireland.

DEW
  • DEW
  • Advanced Member Topic Starter
18 September 2018 06:16:31

For the first time since july 31st there are no tropical storms or hurricanes anywhere in the world (as distinct from tropical depressions). 

But although the Atlantic is likely to stay quiet, due to Saharan dust, the Caribbean and the west coast of Mexico need watching.


War is God's way of teaching Americans geography - Ambrose Bierce

Chichester 12m asl

Stormchaser
18 September 2018 13:54:11

Concerning that the models are increasingly keen on some E Pac to Caribbean enhanced vertical instability (upward motion) for late Sep and some way into October; that's added support for Caribbean and Gulf of Mexico TC development right at the time when it becomes seasonally most favoured anyway.

What's more, there are some exceptionally high SSTs in parts of those two seas at the moment. I'd not be surprised to see a category 5 develop.


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

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2025's Homeland Extremes:

T-Max: 32.0°C 12th Aug | T-Min: -5.4°C 4th Jan | Wettest Day: 31.8 mm 18th Dec | Ice Days: None

Keep Calm and Forecast On

Stormchaser
18 September 2018 20:40:53

http://www.severe-weather.eu/mcd/a-possible-formation-of-medicane-in-the-tyrhenian-sea-on-thursday-sept-20th/

One for the Medicane season Q?

Could be one of the most impressive on record given the ingredients in place.


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

https://twitter.com/peacockreports 

2025's Homeland Extremes:

T-Max: 32.0°C 12th Aug | T-Min: -5.4°C 4th Jan | Wettest Day: 31.8 mm 18th Dec | Ice Days: None

Keep Calm and Forecast On

Quantum
18 September 2018 21:00:54

http://www.severe-weather.eu/mcd/a-possible-formation-of-medicane-in-the-tyrhenian-sea-on-thursday-sept-20th/

One for the Medicane season Q?

Could be one of the most impressive on record given the ingredients in place.

Originally Posted by: Stormchaser 

I've really lapsed when it comes to medicane watching haven't I! 

Thanks for pointing this out, it does definitely look impressive although very unorthodox in the way it forms.

Medicanes usually progress through a fairly prescriptive process of Cold core upper level cutoff low -> Subtropical disturbance -> Warm core propagating upwards.

 

The upper level cold low doesn't really seem to exist in this case or if it does its very weak. This suggests the storm may be powered by unusually high SSTs which is more like a conventional TC than a medicane.

 


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

Rob K
18 September 2018 23:34:49
Is that another hurricane that GFS is developing from about 126 hours off the eastern seaboard? Looks a long way north.
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

Caz
  • Caz
  • Advanced Member
19 September 2018 03:34:58

http://www.severe-weather.eu/mcd/a-possible-formation-of-medicane-in-the-tyrhenian-sea-on-thursday-sept-20th/

One for the Medicane season Q?

Could be one of the most impressive on record given the ingredients in place.

Originally Posted by: Stormchaser 

  Hubby and I came back from the Caribbean a few days ago having managed to avoid any hurricanes.  My son’s on holiday in Cancun at the moment and so far he’s been lucky too.  I’m off to Greece, Ionian Islands, at the end of next week with my daughter and sister, which I thought would be a safer bet!  Will our luck with the weather run out?  


Market Warsop, North Nottinghamshire.

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Quantum
19 September 2018 10:31:32

Blob of convection in the Med at the moment but no circulation yet.

Models have really climbed down on developing the Medicane due to land interaction.

 


25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

DEW
  • DEW
  • Advanced Member Topic Starter
21 September 2018 06:26:15

After a rest, three disturbances to watch. The one off the coast of Africa seems to have the best chance of long term developmeny but that'll take time. One nearer the Caribbean given low chances, and more interestingly for the UK, a 'zombie Florence' getting organised from Florence's remnants and expected to form a cut-off low in the N Atlantic. Now there's a challenge for naming storms!

https://www.nhc.noaa.gov/?atlc 

GFS charts already show this zombie as a small feature but it gets a sudden boost in a week's time to full hurricane status - is that the result of it being joined by one of the other disturbances? But even hen it stays in situ for several days.


War is God's way of teaching Americans geography - Ambrose Bierce

Chichester 12m asl

DEW
  • DEW
  • Advanced Member Topic Starter
22 September 2018 06:07:07

These three continue to develop and there's a minor disturbance off the Bahamas,

The disturbance near the Caribbean has perked up more than was expected and become TD11, but still not forecast as a major threat. It could easily get swept up by 99I off Africa which looks much more potent in days to come.

98L* in the North Atlantic also given significant chances of development from non-tropical to tropical storm but not for the moment going anywhere. It could however affect us by pusing tropical air in our direction.

A toss-up as to which claims the title of Kirk first.

 

EDIT: At least, I think this is 98L but that title could have been given to the lesser storm nearer the Bahamas, on the grounds that it's close enough to the States to be worth investigating


War is God's way of teaching Americans geography - Ambrose Bierce

Chichester 12m asl

The Beast from the East
22 September 2018 09:51:32

Stormchaser looks correct in his prediction. A lot of activity popping up now

 


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

Caz
  • Caz
  • Advanced Member
22 September 2018 14:31:05

My son and his girlfriend have been in Cancun for a week now and report they’ve had nothing but blue sky!  They still have another week there but at least the weather’s behaved for half their holiday. 

My daughter, sister and I are off to Zante on Friday, where the current weather is sunny with 30c but the forecast for next week is much cooler, so I’m hoping that’s wrong!  


Market Warsop, North Nottinghamshire.

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picturesareme
22 September 2018 15:17:21
kirk now named - what a ridiculous name.
POD
  • POD
  • Advanced Member
22 September 2018 15:24:09

Light rain.

10.2c

1016.7mb falling

4.4mm


Pat, Crawley Down, West Sussex, 121m asl.
Solar Cycles
22 September 2018 15:47:05

My son and his girlfriend have been in Cancun for a week now and report they’ve had nothing but blue sky!  They still have another week there but at least the weather’s behaved for half their holiday. 

My daughter, sister and I are off to Zante on Friday, where the current weather is sunny with 30c but the forecast for next week is much cooler, so I’m hoping that’s wrong!  

Originally Posted by: Caz 

Hows the seagrass problem over there?

Its down to a lack of hurricane activity why this  has been such an issue over the last several years.

Caz
  • Caz
  • Advanced Member
22 September 2018 16:46:48

Hows the seagrass problem over there?

Its down to a lack of hurricane activity why this  has been such an issue over the last several years.

Originally Posted by: Solar Cycles 

I didn’t realise the Sargassum seaweed problem was due to the lack of hurricanes.  That’s another wrinkle in me bum!  

We’ve experienced it almost everywhere we’ve been in the Caribbean but never as bad as this year.  We came back from the Dominican Republic two weeks ago and it was really bad when we arrived but they erected a boom with nets in the sea, a few metres from the shore line to stop it coming onto the beach and it was working well when we left.  

Daniel says it’s a similar situation in Cancun with hotel staff working through the day to clear it!


Market Warsop, North Nottinghamshire.

Join the fun and banter of the monthly CET competition.

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