They do.. ever see the underside of a storm just before the tornado shows
itself?

Also, Doppler study of developing thunderstorms show rising rotation within
the cloud as it builds..

I'll have to go find that web page on that...
BT

"W.J. (Bill) Dean (U.K.)." wrote in message
...
If thermals rotate, why don't the clouds rotate?

W.J. (Bill) Dean (U.K.).
Remove "ic" to reply.


"Bill Daniels" wrote in message
...

They would be familiar to people watching Southern California brush
fires.
Incendiary bombing raids in WWII produced fire tornadoes that ripped
buildings apart making them burn even faster. They called them
'Firestorms'.

Hijacking this thread a bit, there is an interesting thread on Dr. Jack's
forum about thermal rotation. A thought is that our flight computers
might
be able to detect thermal rotation and then suggest a turn direction to
maximize climb.

Bill Daniels