Pembrokeshire something-or-other

[Sentinel]

Okay, I was listening to radio 5 yesterday and the chap doing the weather said that when you weather conditions specifically like this you get loads of rain over Pembrokeshire as this is where all the air meets. He said that this would cause it to rain pretty muich non-stop in Pembrokeshire and watching the radar over the last 48 hours this is exactly what has happened. It has a specific name it's the Pemroke ?????

I can't remember!

Can any one help with this?

[Bristawl Si]

Dangler

A 'true' PD literally dangles over Cornwall as well.

I think i've got it right

Edited December 1, 2017 by Bristle boy

[Mokidugway]

Cornwall gets a brown willy too 

[Sentinel]

Thank you Bristol Boy, it is indeed a Pembrokeshire Dangler- there's even a wikipedia entry for it:

The Pembrokshire Dangler

Quote

The Pembrokeshire Dangler is a convergence zone which forms a line of continuous showers aligned north-south across the Irish sea; often as snow occurring during late autumn and winter, since the environmental factors required for its formation such as warm sea temperatures and cold Arctic air aloft are usually only met at this time of year.

It is initiated as a northerly flow is forced between the Rhins of Galloway and the Antrim Plateau. This is then augmented by land breeze effects producing winds blowing from east of north off England and Wales and from west of north off Ireland; these winds then converging down the length of the Irish Sea. As the convergence line spawns deep convective cells, they flow over progressively warmer waters creating further instability and prime conditions for prolonged convection across Pembrokeshire, Cornwall and west Devon.

On 25 November 2005 the Pembrokeshire Dangler gave 20 centimetres (7.9 in) of snow across Bodmin Moor and across parts of northwest Devon, particularly around Barnstaple, causing considerable disruption. Exactly five years later on 25 November 2010 another Pembrokeshire Dangler event caused 3–4 centimetres (1.2–1.6 in) of snow in the Bodmin area.