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Spanish plume anyone? Storm and convective discussion 17th July Onwards

Jane Louise

By Jane Louise
in Storms & Severe Weather

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Greeny Aficionado

Greeny

Posted
  • Location: Norwich, Norfolk, East Anglia
  • Weather Preferences: Sunny, stormy and I don't dislike rain only cold
  • Location: Norwich, Norfolk, East Anglia
Posted (edited)

just found this on twitter

 

Storm relative helicity- potential for cyclonic updraft rotation in supercells &look at the chart for UK on Saturday!

 

Posted ImageBsw8eAeIYAMU1_y.jpg

 

 

does this mean there could be a serious threat of tornadic activity?

 

 

 

Oh yes nicely spotted. Keep an eye on it could we see supercells break out on Saturday? it certainly looks possible at the moment!

Edited by Greenday
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Raidan Enthusiast

Raidan

Posted
  • Location: BRISTOL
  • Location: BRISTOL
Posted

Hmmm do I or don't I stay up to see what happens.

I have work early tomorrow and don't want to waste hours looking and hoping when I could be getting some sleep

Decisions decisions.

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A.J Maestro

A.J

Posted
  • Location: Sunderland
  • Weather Preferences: Hot Summer, Snowy winter and thunderstorms all year round!
  • Location: Sunderland
Posted

Its not hard to see why those Supercell Composites are very favourable, Deep Layer Shear On The Order Of 30-40kts, T/T/d of 84/71 and a Neg Tilt Trough are the perfect ingredients for Supercells to form, we ideally look for anything over 30kts as a rule of thumb when chasing these systems in Tornado Alley

 

The big old question is wether Surface Heating and indeed a Surface Based Storm can utilise that 2,000jkg of energy, we only have a very small land mass to get these things done.

exactly Mr Sherminator, not enough land mass for the most part. We breed 'em, the North Sea and Holland get them.....still, remember 28/6/12...we live in hope!  :D

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Greeny Aficionado

Greeny

Posted
  • Location: Norwich, Norfolk, East Anglia
  • Weather Preferences: Sunny, stormy and I don't dislike rain only cold
  • Location: Norwich, Norfolk, East Anglia
Posted (edited)

Its not hard to see why those Supercell Composites are very favourable, Deep Layer Shear On The Order Of 30-40kts, T/T/d of 84/71 and a Neg Tilt Trough are the perfect ingredients for Supercells to form, we ideally look for anything over 30kts as a rule of thumb when chasing these systems in Tornado Alley

 

The big old question is wether Surface Heating and indeed a Surface Based Storm can utilise that 2,000jkg of energy, we only have a very small land mass to get these things done.

 

 

 

Wow! I just spotted the El Reno tornado in your chase history, that is certainly going to be a memorable one!

Edited by Greenday
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Rammie Enthusiast

Rammie

Posted
  • Location: Home Kettering. Work Somerset.
  • Location: Home Kettering. Work Somerset.
Posted

Hmmm do I or don't I stay up to see what happens.I have work early tomorrow and don't want to waste hours looking and hoping when I could be getting some sleepDecisions decisions.

Doesn't it look as though tonights stuff is bound for Ireland?

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A.J Maestro

A.J

Posted
  • Location: Sunderland
  • Weather Preferences: Hot Summer, Snowy winter and thunderstorms all year round!
  • Location: Sunderland
Posted

poss f4 but was close to a thousand years ago ,torro have an article on it !!.....

yes, I think John Holmes witnessed it!  :laugh:

 

 

(sorry in-house site team joke  :wink: )

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stevofunnelcl Aficionado

stevofunnelcl

Posted
  • Location: Torrington, Devon
  • Weather Preferences: storms - of the severe kind
  • Location: Torrington, Devon
Posted

a tail of two windows here.

 

My north facing window, has a stunning sunset over the ocean (with some clear sky out that way)

My south facing window, has a very dark brooding thundery looking sky

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Hodr Rookie

Hodr

Posted
  • Location: Halifax, West Yorkshire
  • Weather Preferences: Severe thunderstorms, strong wind, heavy snow
  • Location: Halifax, West Yorkshire
Posted

Dawlish has a nice live HD webcam showing the incomming storm. Some nice strikes and thunder audible. http://www.dawlishbeach.com/live/index.php?main_page=index&cPath=18

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Ben Sainsbury Accomplished

Ben Sainsbury

Posted
  • Location: Bristol
  • Weather Preferences: Thunderstorms and Snowstorms
  • Location: Bristol
Posted

In Exeter by topsham next to the canal and can hear occasional thunder And lightning to South and NNW

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ancientsolar Community Regular

ancientsolar

Posted
  • Location: Blackwood SE Wales
  • Location: Blackwood SE Wales
Posted

a tail of two windows here.

 

My north facing window, has a stunning sunset over the ocean (with some clear sky out that way)

My south facing window, has a very dark brooding thundery looking sky

Which window satisfies you most?

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Greeny Aficionado

Greeny

Posted
  • Location: Norwich, Norfolk, East Anglia
  • Weather Preferences: Sunny, stormy and I don't dislike rain only cold
  • Location: Norwich, Norfolk, East Anglia
Posted

Its still over the sea though, it has yet to reach land....

Anyway to something regarding tonight, storms are breaking out over an area where the lapse rates are high:

Posted Image

This area moves NW throughout the night, where we still have the high rates over the SW by 12am:

 

Posted Image

Shear then increases during the early morning, which should help things get organised and potentially intensify the storms:Posted ImagePosted ImagePosted Image

It does take its time moving, but these storms should follow suite, its a very dynamic and fluid setup so it needs following closely!

And I wonder if the SW/Wales will see any supercell developments (tornadoes etc) :

Posted ImagePosted ImagePosted Image

 

Now I'm starting to think that overnight could be a potentially dangerous situation. All sleeping and a tornado sweeps across a town or city in the highlighted risk area. Thanks for posting this Panayiotis.

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DanDorsetUK Community Regular

DanDorsetUK

Posted
  • Location: Poole, BH14
  • Location: Poole, BH14
Posted (edited)

WOAH just looked south out my window from Bournemouth south and the sky is turning very dark and thundery.

EDIT, ime surprised no lightening is coming from this yet! Looks like its bout to go bang

Edited by Rapodo
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Chris K Rising Star

Chris K

Posted
  • Location: South Gloucestershire BS35
  • Weather Preferences: Severe weather enthusiast
  • Location: South Gloucestershire BS35
Posted

Hmm met office rainfall update is a rather large downgrade for later on in the W country....will be interesting to see how this pans out.

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Dami Maestro

Dami

Posted
  • Location: Bedfordshire 33m above mean sea level
  • Weather Preferences: Snowy and thundery.
  • Location: Bedfordshire 33m above mean sea level
Posted (edited)

Dawlish has a nice live HD webcam showing the incomming storm. Some nice strikes and thunder audible. http://www.dawlishbeach.com/live/index.php?main_page=index&cPath=18

I have it playing in the back ground. maybe the only thunder I hear.

 

nice big clap then

Edited by Dami
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Cakie Seasoned

Cakie

Posted
  • Location: Up North like
  • Location: Up North like
Posted

Heavy rain starting and seagulls returning to base pronto. Oh the smell, it's been dry for quite a while here

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Biggin Rising Star

Biggin

Posted
  • Location: Langley Waterside, Beckenham
  • Location: Langley Waterside, Beckenham
Posted

Enjoy SW  Looking forward to Tom night for me in the SE Be on later.

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OddSpot Community Regular

OddSpot

Posted
  • Location: Chesterfield, North Derbyshire 100m ASL
  • Location: Chesterfield, North Derbyshire 100m ASL
Posted (edited)

Dawlish has a nice live HD webcam showing the incomming storm. Some nice strikes and thunder audible. http://www.dawlishbeach.com/live/index.php?main_page=index&cPath=18

 Right old crack of thunder on this cam just now and massive flash x 2

 

Nice find :good:

Edited by OddSpot
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