In article
,
mittens writes:
What weather specific weather conditions would cause these fohn winds?
What time year would they occur in Scotland and in Wales? The chinook
winds in western Canada only occur in the winter.

I think they can occur at any time of the year, when a moist airstream
is forced to rise by the mountains and lose some of that moisture as
rain, before being warmed as it descends the lee-slope. But the warming
effect is small by Canadian standards: normally no more than 2-3C,
perhaps 5C at most.
--
John Hall
"Banking was conceived in iniquity and born in sin"
attributed to Sir Josiah Stamp,
a former director of the Bank of England