GeoffC wrote in message . ..
On Wed, 16 Jun 2004 15:39:08 +0100, "Paul Saunders"
wrote:

Weather forecast was good yesterday - bright clear sunshine in South
Wales, temp 27 degrees, cold front to the north moving south but not
expected to arrive until evening at least.

Perhaps you listened to the same forecaster as we did - we should make
an effigy of him to stick pins in...


I went there last summer (the Saturday of the August bank holiday
weekend) and equally bizarre and unexpected weather occurred, so maybe
it's just the topography of the area. "Warm sector" conditions of low
cloud clearing to sunshine were forecast. That indeed happened at
first but in the afternoon a group of heavy cumulonimbus-based showers
developed in situ (not at all typical "warm sector" weather), a
particularly nasty one to the southwest. They were very slow-moving
and seemed to move in one direction then the other (some were moving
from the northeast, others from the west). Luckily none passed
overhead but at the same time mist appeared from seemingly out of
nowhere, not particularly thick but enough to obscure the hitherto
amazing view.

Wonder if anyone from uk.sci.weather could shed some light on this?
(Saturday August 23 last year, Mynydd Du also known as the Black
Mountain, South Wales). Meant to mention it last year but never got
round to it....

Nick

In article , Nick
Whitelegg writes
Wonder if anyone from uk.sci.weather could shed some light on this?
(Saturday August 23 last year, Mynydd Du also known as the Black
Mountain, South Wales). Meant to mention it last year but never got
round to it....

Be careful not to confuse the Black Mountains (Eastern area) with Black
Mountain in the Western fans.
--
Bill Grey
http://www.billboy.co.uk

Nick Whitelegg wrote:

GeoffC wrote in message . ..

On Wed, 16 Jun 2004 15:39:08 +0100, "Paul Saunders"
wrote:


Weather forecast was good yesterday - bright clear sunshine in South
Wales, temp 27 degrees, cold front to the north moving south but not
expected to arrive until evening at least.

Perhaps you listened to the same forecaster as we did - we should make
an effigy of him to stick pins in...



I went there last summer (the Saturday of the August bank holiday
weekend) and equally bizarre and unexpected weather occurred, so maybe
it's just the topography of the area. "Warm sector" conditions of low
cloud clearing to sunshine were forecast. That indeed happened at
first but in the afternoon a group of heavy cumulonimbus-based showers
developed in situ (not at all typical "warm sector" weather), a
particularly nasty one to the southwest. They were very slow-moving
and seemed to move in one direction then the other (some were moving
from the northeast, others from the west). Luckily none passed
overhead but at the same time mist appeared from seemingly out of
nowhere, not particularly thick but enough to obscure the hitherto
amazing view.

Wonder if anyone from uk.sci.weather could shed some light on this?
(Saturday August 23 last year, Mynydd Du also known as the Black
Mountain, South Wales). Meant to mention it last year but never got
round to it....

Nick

I live on the Black Mountain. Light drizzle where the rain droplets are
small but very closely packed is a "feature of this area". In order to
try to forecast it, I asked Will for help.

He replied that his area (Haytor) is very similar and that this weather
occurs when between warm and cold fronts and the isobars are somewhere
between south and west. I have applied his reasoning and it works. I
have a smallholding and knowledge of the approach of this sort of
weather is very important. I now have neighbours ringing me up for my
assessment (I could not call it a forecast) before they cut hay/silage
or before they embark on certain animal treatments.

--
Howard Neil

W. D. Grey wrote:
In article , Nick
Whitelegg writes

Wonder if anyone from uk.sci.weather could shed some light on this?
(Saturday August 23 last year, Mynydd Du also known as the Black
Mountain, South Wales). Meant to mention it last year but never got
round to it....


Be careful not to confuse the Black Mountains (Eastern area) with Black
Mountain in the Western fans.

The Black Mountains are Y Mynyddoedd Duon as opposed to Y Mynydd Du as
correctly used by the OP.

By the way, Y Mynydd Du is pronounced "er minith dee" the "th" being as
in "the" rather than in "think".


--

Howard Neil
(western end of the Brecon Beacons National Park, at 235 metres asl, on
the side of Y Mynydd Du)

Nick Whitelegg wrote:

I went there last summer (the Saturday of the August bank holiday
weekend) and equally bizarre and unexpected weather occurred, so maybe
it's just the topography of the area.

Most air masses generally approach from the west and Mynydd Du is the
first real bit of high land that they reach, thus the air is forced
upwards, cloud forms, rain falls. I suspect that more rain falls on
Mynydd Du than on the eastern side of the Beacons because of this. I've
often seen clouds on Mynydd Du but sunshine further west.

Same thing happens on Gower, a flattish peninsula stretching out in the
Bristol Channel. Often bathed in bright sunshine while clouds tend to
develop over the slightly hillier Swansea. Not uncommon for it to rain
in Swansea whilst sunny in Gower. I've often seen showers marching
along the Llanelli coast to the north completely bypassing Gower.

Paul
--
http://www.wilderness-wales.co.uk
http://www.wildwales.fsnet.co.uk
http://www.photosig.com/go/users/userphotos?id=118749

Howard Neil wrote:

By the way, Y Mynydd Du is pronounced "er minith dee" the "th" being
as in "the" rather than in "think".

I'd argue that it's "Uh Munith Dee". Would your variation be a local
dialect? We don't usually bother with the "Uh".

Paul
--
http://www.wilderness-wales.co.uk
http://www.wildwales.fsnet.co.uk
http://www.photosig.com/go/users/userphotos?id=118749

Paul Saunders wrote:
Howard Neil wrote:


By the way, Y Mynydd Du is pronounced "er minith dee" the "th" being
as in "the" rather than in "think".


I'd argue that it's "Uh Munith Dee". Would your variation be a local
dialect? We don't usually bother with the "Uh".

It could well be a local dialect. There are often variations between
villages, never mind about further distances. Of course, it could also
be poor use of phonetics by me. If you have a look at
http://www.s4c.co.uk/c_index.html you will see that S4C also use the "y"
(which we pronounce "er")


--
Howard Neil

said...

By the way, Y Mynydd Du is pronounced "er minith dee" the "th" being as
in "the" rather than in "think".

Close. Try 'muh-nith dee'. You're right about the hard sounding
'th' though.
--
Fran
If you need my email address please ask.

Fran wrote:
said...


By the way, Y Mynydd Du is pronounced "er minith dee" the "th" being as
in "the" rather than in "think".


Close. Try 'muh-nith dee'. You're right about the hard sounding
'th' though.

Have a listen to Cefn Gwlad next Wednesday, S4C, 9.0pm.

--
Howard Neil
(western end of the Brecon Beacons National Park, on y Mynydd Du, at 235
metres asl)

"Howard Neil" wrote

By the way, Y Mynydd Du is pronounced "er minith dee" the "th" being as
in "the" rather than in "think".

Close. Try 'muh-nith dee'. You're right about the hard sounding
'th' though.

Have a listen to Cefn Gwlad next Wednesday, S4C, 9.0pm.

If you can't agree on the Welsh pronunciation you could always stick to the
English. One world, one language, far simpler.