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Uk Convective General Discussion & Forecasts, 12th to 14th August 2012

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Chris D Apprentice

Chris D

Posted
  • Location: Norwich, Norfolk
  • Weather Preferences: Heavy Snow, Thunderstorms & Summer Plumes
  • Location: Norwich, Norfolk
Posted (edited)

Yes I just heard thunder. Very distant over the wirrel but it was thunder. The sky's gone all funny as well.

Yes very manacing clouds to my W as well. Gone pitch black now.

Edited by Chris D
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Team Jo Accomplished

Team Jo

Posted
  • Location: Hilversum, Netherlands
  • Weather Preferences: Hot Sun, Deep Snow, Convective Goodness, Anvil Crawlers
  • Location: Hilversum, Netherlands
Posted (edited)

I have thunder! - well, one rumble- in S.essex.Sky is that lovely dirty yellow grey....

C'mon!!

Edited by Teamjollie
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Chris D Apprentice

Chris D

Posted
  • Location: Norwich, Norfolk
  • Weather Preferences: Heavy Snow, Thunderstorms & Summer Plumes
  • Location: Norwich, Norfolk
Posted

This storm is imminent! It sure is taking its time...

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Chris.R Maestro

Chris.R

Posted
  • Location: Pemberton, Wigan, 54 M ASL. 53.53,-2.67
  • Weather Preferences: Winter - snow, Irish sea convection. Summer - thunderstorms, hot sunny days
  • Location: Pemberton, Wigan, 54 M ASL. 53.53,-2.67
Posted

Where are you Chris D, sorry am on my ppphone.

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Chris W Contributor

Chris W

Posted
  • Location: Christchurch, NZ
  • Weather Preferences: Many
  • Location: Christchurch, NZ
Posted

Well, that system sailed west of me and went crazy. I have seen CBs and the skies to the west and south have looked potentially wet all evening. There are showers lined up south of me and a Met Office forecast of heavy (possibly thundery) rain later this evening but I wonder if it's another close shave for me today. I hope not :).

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Chris D Apprentice

Chris D

Posted
  • Location: Norwich, Norfolk
  • Weather Preferences: Heavy Snow, Thunderstorms & Summer Plumes
  • Location: Norwich, Norfolk
Posted

Where are you Chris D, sorry am on my ppphone.

Southport

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Chris.R Maestro

Chris.R

Posted
  • Location: Pemberton, Wigan, 54 M ASL. 53.53,-2.67
  • Weather Preferences: Winter - snow, Irish sea convection. Summer - thunderstorms, hot sunny days
  • Location: Pemberton, Wigan, 54 M ASL. 53.53,-2.67
Posted

Oright so the cells are to the northwest not the south west. O well.

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Chris D Apprentice

Chris D

Posted
  • Location: Norwich, Norfolk
  • Weather Preferences: Heavy Snow, Thunderstorms & Summer Plumes
  • Location: Norwich, Norfolk
Posted

Oright so the cells are to the northwest not the south west. O well.

Aye but there's quite a line of them, you never know you and I may get something from it soon. I havent got anything yet.

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Chris.R Maestro

Chris.R

Posted
  • Location: Pemberton, Wigan, 54 M ASL. 53.53,-2.67
  • Weather Preferences: Winter - snow, Irish sea convection. Summer - thunderstorms, hot sunny days
  • Location: Pemberton, Wigan, 54 M ASL. 53.53,-2.67
Posted

Where did you see the met forecast for heavy thundery rain Chris W? It's not on their northwest england text forecast on their websyte.

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Chris D Apprentice

Chris D

Posted
  • Location: Norwich, Norfolk
  • Weather Preferences: Heavy Snow, Thunderstorms & Summer Plumes
  • Location: Norwich, Norfolk
Posted

I've just noticed the domination of Chris's on this page lol laugh.png

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Supacell Accomplished

Supacell

Posted
  • Location: Belper, Derbyshire
  • Weather Preferences: Thunderstorms
  • Location: Belper, Derbyshire
Posted

Seems to be a stream of showers moving S to N that are developing into storms as they touch the Liverpool Bay area, but are remaining just off the coast. Having said that, there is one that seems to be now touching the land around the Wirral.

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Chris.R Maestro

Chris.R

Posted
  • Location: Pemberton, Wigan, 54 M ASL. 53.53,-2.67
  • Weather Preferences: Winter - snow, Irish sea convection. Summer - thunderstorms, hot sunny days
  • Location: Pemberton, Wigan, 54 M ASL. 53.53,-2.67
Posted

Just saw lightning!!! No thunder though. Chucking it down here now. Lots of sferics everywhere

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Stuart Experienced

Stuart

Posted
  • Location: Nairn
  • Location: Nairn
Posted

Synopsis:

Large, elongated area of low pressure over the Atlantic beneath an upper trough. A warm, humid airmass is advected northwards across Britain ahead of the upper trough, while cool mid-levels are present over northern Britain.

Discussion:

... ATLANTIC OCEAN & CELTIC SEA ...

During the early hours of the morning, a swathe of several hundred J/kg CAPE will move northwards into southern Ireland from the Atlantic. With this, it is possible that a few thunderstorms will form offshore, and may move inland to Ireland during the daybreak hours, but will probably decay/weaken during the morning hours.

... SCOTLAND, NORTHERN IRELAND, IRELAND ...

Scattered showers and thunderstorms will form as up to 1000J/kg CAPE develops in response to diurnal heating. With jet developing aloft, 30kts DLS will allow storms to become fairly well organised, with the most widespread sferics coverage expected in the highlighted MDT areas.

Low-level convergence and slight LLS may allow a funnel or weak tornado to develop, while hail locally >2.0cm in diameter is possible in any stronger cells. Slight backing of the surface winds may also allow a low-topped supercell to form.

http://www.ukasf.co.uk/storm-forecasts/205

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Chris W Contributor

Chris W

Posted
  • Location: Christchurch, NZ
  • Weather Preferences: Many
  • Location: Christchurch, NZ
Posted

Where did you see the met forecast for heavy thundery rain Chris W? It's not on their northwest england text forecast on their websyte.

There was a symbol earlier in addition to a forecast of intense rain over here in the evening, they have changed it but it's been so borderline that I'm still considering it potentially valid. It's quite amusing to see a meridian-like line of heavy showers a hair's breadth to the west almost refusing to cross an invisible line due south from my house! Weather is a funny old thing.

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Chris.R Maestro

Chris.R

Posted
  • Location: Pemberton, Wigan, 54 M ASL. 53.53,-2.67
  • Weather Preferences: Winter - snow, Irish sea convection. Summer - thunderstorms, hot sunny days
  • Location: Pemberton, Wigan, 54 M ASL. 53.53,-2.67
Posted

just heard moore thunder.

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Chris D Apprentice

Chris D

Posted
  • Location: Norwich, Norfolk
  • Weather Preferences: Heavy Snow, Thunderstorms & Summer Plumes
  • Location: Norwich, Norfolk
Posted (edited)

Its gonna be a close one for mwah.

No rain yet.

EDIT: Starting raining with big drops, but not heavy yet.

Edited by Chris D
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Chris D Apprentice

Chris D

Posted
  • Location: Norwich, Norfolk
  • Weather Preferences: Heavy Snow, Thunderstorms & Summer Plumes
  • Location: Norwich, Norfolk
Posted (edited)

On the edge of the Liverpool storm loads flashes in the cloudsî—

Yeh quite a light show, just noticed! No thunder though, strange. Think its cos its still a way off me yet.

Doubt nobody is in W Formby lol, they're right in the midst of it.

Edited by Chris D
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Supacell Accomplished

Supacell

Posted
  • Location: Belper, Derbyshire
  • Weather Preferences: Thunderstorms
  • Location: Belper, Derbyshire
Posted

Yeh big light show, just noticed! No thunder though, strange.

May be that it is too far away for thunder to be heard. At this time after the sun sets it is possible to see lightning from a fair distance away. Looks to me like most of the sferics are still out to sea. Quite a lot of strikes further out at sea but no radar returns in that area so can't be sure that the lightning detectors are giving accurate readings.

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I Cumbria Marra I Seasoned

I Cumbria Marra I

Posted
  • Location: West Cumbria, Egremont 58m (190.3ft) ASL
  • Weather Preferences: Cold/snow winter, Warm/hot summer, Thunderstorms, Severe Gales
  • Location: West Cumbria, Egremont 58m (190.3ft) ASL
Posted

is there any sferics over cumbria?

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Chris D Apprentice

Chris D

Posted
  • Location: Norwich, Norfolk
  • Weather Preferences: Heavy Snow, Thunderstorms & Summer Plumes
  • Location: Norwich, Norfolk
Posted (edited)

Getting reports from Ainsdale (southern part of Southport) of thunder and lightning. Can't say whether its CG though

Edit: Thunder now heard, it is approaching.

Edited by Chris D
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Chris.R Maestro

Chris.R

Posted
  • Location: Pemberton, Wigan, 54 M ASL. 53.53,-2.67
  • Weather Preferences: Winter - snow, Irish sea convection. Summer - thunderstorms, hot sunny days
  • Location: Pemberton, Wigan, 54 M ASL. 53.53,-2.67
Posted

Having a nice little storm here, am on crosby beach and can see all the lightning. It''s still just out to sea though.

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carl1980 Experienced

carl1980

Posted
  • Location: St Helens, Merseyside 46m asl
  • Location: St Helens, Merseyside 46m asl
Posted

Not heard one rumble still getting flashes seem fainter now though

Yeh quite a light show, just noticed! No thunder though, strange. Think its cos its still a way off me yet.

Doubt nobody is in W Formby lol, they're right in the midst of it.

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