User blog comment:BlackTempest/So, energy weapons?/@comment-15108745-20130817220106/@comment-10390252-20130818160655

@ Sorairo,

Water vapour is very electrically-reactive and the easiest way to make clouds is to extremely-ionise a patch of air. The energy levels involved would be immense to create a cloud like that in a matter of seconds but it is mostly electromagnetic in nature.