"Joe Hunt" wrote in message
...

"John Hall" wrote in message
...
In case Stuart is a beginner, I feel that I should add the caveat: this
is assuming that you actually get some precipitation rather than it
remaining dry!
--
John Hall

Hi John,

If no precipitation was possible with sub 510dm air this assumes an
inversion of sorts relatively near to the surface

Snip

Or there's simply not enough insolation to generate significant convection.

Jon.