Cumulus clouds and Ice Fallout

CUMULUS CLOUDS
Cumulus clouds are formed due to Thermal convection.Their life span is very short which lasts for only few minutes .when new one grows the old one vanishes.The noise pattern for this cloud has a cauliflower kind of structure.

Reference:Cumulus cloud

The  noise pattern that can produce such an effect  is called as pyroclastic noise which google doesn't know.Then I came across Jerry Tessendorf's Siggraph course notes on cloud modelling which gave me an insight about the structure and implementation of cumulus clouds.

I should thank Serg,Luoquilin on odforce for their valuable suggestions .

I tested  the cloud with two different lighting conditions...well it  looks good even in the viewport.
Since i have some issues with the system resource i m unable post the final render.

Again i tested the cloud with a background ..the above image is a view port screen grab..

ICE FALLOUT
  Ice fallout is formed when the residual water cloud left by this one has evaporated leaving only the falling frozen particles.

 Soon i will be posting the tool demonstration and rendered output...