Tornado using 2.5 Point Density Volumetrics

I recently made some changes to the cloud script to enable working with particles etc for creating tornadoes etc.

Here is a tornado I did:

http://vimeo.com/12132986

And here is a tutorial on how I created it using the cloud generator:

http://vimeo.com/12151638

These aren’t smoke, all point density which is better for some things worse for others.

I have other tutorials on this on this thread:

http://blenderartists.org/forum/showthread.php?t=166174

Thought I should create a thread here so new users could find them.