Gusting snow effect...

Hi,

I have AE CS6 and Premiere Pro, etc..  and I was wondering how to make gusting snow.  I know how to make falling snow but I'd like to do something like in the following video. 

Gusting Snow Effect

http://www.youtube.com/watch?v=kNPALlLCY34

It would seem he has the snow going sideways and smoke. 

thanks for any help/ideas?

Peter Forrest

CS6 ProPro suite, Win 7 64 bit