"Rodney Blackall" wrote in message
...
In article , Joe Hunt
wrote:

wrote in message
oups.com...
Further to the question about the CB cloud over Kent which could be
seen from near Heathrow, what's the furthest that CBs at our
latitudes can be seen?

[Snip]

Summer is the time when you see CBs at a greater distance due to their
larger height. Some CBs can touch 40,000ft in the height of summer in
air masses with high tropopauses. Conversely, in winter, CB tops in a
northerly can be as low as 8000ft. Think of Pythagoras' Theorem.

I remember this subject coming up before, I'd try Google Groups.

DONT think Pythagoras! The Earth is not flat.
Set cloud tops at anything up to 50,000 for Summer, anvils will be lower.


Surely when talking of relatively short distances, the effects of the
Earth's curvature are minimal ?

Joe