Admittedly, this is a rather strange request. I am an author researching my first fantasy novel, and I'm trying to create at least some degree of verisimilitude for regular physics in a world that has powerful magic. One plot point is that a city has created a superweapon in the form of a controllable supercell, and they have several huge factories pumping out the moisture to feed the thunderstorm. They have ways to create the right atmospheric conditions to support the supercell and also keep it from actually discharging any of its energy until they are ready. If this is at least somewhat plausible, given some magic but not using it as a handwave, what would be in one of the cloud factories? Just boiling off huge amounts of water to create the vapor necessary seems rather prosaic.