Smoke Tests[Blender 2.5]

Hi there,

after a reaaaaaaaaally long break with blender i tried some of the features i’ve not really used before: smoke sim.
And i am really impressed. This is what i got so far.

I want to create a nice tornado effect, with flying debris, destruction, better lighting of course and here are some tests i made. I tried to mimic the beginning effect of a tornado, not satisfied with it now

iam eager to hear your suggestions

Tornado was pretty good except for the smoke coming up from the ground, you may want to try and time the smoke coming up to start when the smoke coming down touches down all the way.