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Quantum
  • Quantum
  • Advanced Member Topic Starter
15 February 2016 16:03:02

SEE latest post; I think this is now tropical like.


I was ready to finish the 2015 season review (I think some edits are needed; I want to possibly remove a storm and add one in) here: http://quantumoverlord.blogspot.co.uk/2015/10/medicane-season-2015-to-be-updated.html


but then this appeared 'out of season' and I think this has a chance of becoming a tropical like storm.


 


medicanen


This area of thunderstorms looks like it could develop into a tropical like system. Even though February is pretty late for Medicanes (as I say, I thought ending the season at the end of January is reasonable) it looks like its still possible. Wind sheer is low, and 500hpa temperatures are unusually cold (giving favorable development conditions), the SST is marginal at 15C which is pretty much the lower limit for medicane formation. 


Itl be interesting to see how this system develops. Thoughts?


2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

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

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

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)
Total: 12 days with snow/sleet falling.
Essan
15 February 2016 16:19:18

No idea who First Malta are, but they have already dubbed it Cyclone Charlene ....

http://www.independent.com.mt/articles/2016-02-15/local-news/Cyclone-Charlene-expected-to-pass-close-to-Malta-on-Thursday-rain-expected-6736153309


http://blog.firstmalta.com/2016/02/15/it-is-now-confirmed-cyclone-charlene-will-not-be-hitting-malta-directly-next-thursday/


Andy
Evesham, Worcs, Albion - 35m asl
Weather & Earth Science News 

Anyone who is capable of getting themselves made President should on no account be allowed to do the job - DNA
Devonian
15 February 2016 19:32:38
Essan
15 February 2016 19:50:16

Yes, I think First Malta may be run by James Maddens Maltese cousin ......

Though the point is the local media have picked up on internet speculation about this storm


Andy
Evesham, Worcs, Albion - 35m asl
Weather & Earth Science News 

Anyone who is capable of getting themselves made President should on no account be allowed to do the job - DNA
Bertwhistle
15 February 2016 19:57:21


I was ready to finish the 2015 season review (I think some edits are needed; I want to possibly remove a storm and add one in) here: http://quantumoverlord.blogspot.co.uk/2015/10/medicane-season-2015-to-be-updated.html


but then this appeared 'out of season' and I think this has a chance of becoming a tropical like storm.


 


medicanen


This area of thunderstorms looks like it could develop into a tropical like system. Even though February is pretty late for Medicanes (as I say, I thought ending the season at the end of January is reasonable) it looks like its still possible. Wind sheer is low, and 500hpa temperatures are unusually cold (giving favorable development conditions), the SST is marginal at 15C which is pretty much the lower limit for medicane formation. 


Itl be interesting to see how this system develops. Thoughts?


Originally Posted by: Quantum 


You say SSTs of 15C are marginal- does that mean there have been examples of genesis at 15C? In which case, given the favourable low sheer and low 500s, it would be fairly likely, although I have no idea what the other key factors are beside those you listed.


This really is a fascinating topic. Interested by classic Greek tales, I always wondered if the storms that wrecked fleets could be real in this enclosed sea but this adds a dimension to it. How many of these wrecks were not a result of classical conflict?


http://news.nationalgeographic.com/2015/11/151103-greek-shipwreck-find-trading-route/


Bertie, Itchen Valley.
Retire while you can still press the 'retire now' button.
DEW
  • DEW
  • Advanced Member
15 February 2016 20:42:29


 This really is a fascinating topic. Interested by classic Greek tales, I always wondered if the storms that wrecked fleets could be real in this enclosed sea but this adds a dimension to it. How many of these wrecks were not a result of classical conflict?


http://news.nationalgeographic.com/2015/11/151103-greek-shipwreck-find-trading-route/


Originally Posted by: Bertwhistle 


I don't think you need invoke Medicanes. Having been all but capsized in a small pleasure cruiser, probably much the same size as a Greek trireme,  which put to sea as this shelf cloud and associated thunderstorm approached, I can understand how fleets in ancient times were vulnerable.


Photo from Jun 2012



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

Chichester 12m asl
Quantum
  • Quantum
  • Advanced Member Topic Starter
15 February 2016 21:42:49

Don't think this one is to be, its moving too far south and overland; will probably dissapate now in a few hours. 


2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

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

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

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)
Total: 12 days with snow/sleet falling.
Quantum
  • Quantum
  • Advanced Member Topic Starter
16 February 2016 14:32:14

Yes I have named this, the 5th tropical like cyclone of the 2015/2016 season.


meicne


To me this looks tropical now, though I may declassify it posthumously.


Large eye structure indicates hybrid like characturistics (it would probably be subtropical if it was an atlantic system), however I think its organised enough to now merit the medistorm classification.


 


To obtain medicane status it needs sustained winds more than 39mph.


Again this is all my unofficial classification; I'm only doing this to hopefully provide some kind of record even if I have ended up mischaracturising some storms.


 


Note: Phase space diagrams are showing this as cold cored; however I think this is because they are not actually resolving this feature at all; rather the extratropical depression lying to the north east (with well defined fronts). Wierdly even the high res models are not resolving this feature well at all.


2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

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

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

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)
Total: 12 days with snow/sleet falling.
Quantum
  • Quantum
  • Advanced Member Topic Starter
16 February 2016 14:43:33

WRF usually handles these well but it just simply isn't picking it up.



The 1012mb low is not 'Eric', that's just a plain old depression. Rather I think its that 1014mb thing that lies to the south, although it even has the position of that wrong. I guess it goes to show how difficult these features are to predict. 


2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

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

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

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)
Total: 12 days with snow/sleet falling.
Quantum
  • Quantum
  • Advanced Member Topic Starter
16 February 2016 14:55:48

OK this is starting to look impressive; although there was some sheering on its NE side earlier; not its eyewall looks fairly healthy.


Does anyone know where we can get buoy observations? I have no way to estimate its windspeed.


medd2


2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

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

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

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)
Total: 12 days with snow/sleet falling.
Bertwhistle
17 February 2016 09:07:51


OK this is starting to look impressive; although there was some sheering on its NE side earlier; not its eyewall looks fairly healthy.


Does anyone know where we can get buoy observations? I have no way to estimate its windspeed.


medd2


Originally Posted by: Quantum 


I don't know if this one's any use Q?


http://passageweather.com/


 


Bertie, Itchen Valley.
Retire while you can still press the 'retire now' button.

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