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)