Wouln't it be cool if steam could automatically simulate lightning, why yes it would. I was thinking that when four particles of steam are in contact with one particle of water/ice they will result in a large lightning bolt.
This just isn't possible, since it means every time water evaporates, a bunch of huge LIGHtning bolts are created. You should probably rethink this, but I don't think it will be added anyway, unless we add some type of cloud element.