The way HAARP works, according to the conspiracies, is it forces the ionosphere to produce the intended weather. Meaning if the high-intensity radio waves really could change the weather then that the snow fall produced by HAARP would still be consider real snow. Now I don't think HAARP can produce the effects you are thinking of. The weather manipulation you are thinking of comes from what they call cloud seeding. This weather modification is used to change the amount of precipitation that falls from clouds by dispersing substances into the air via an airplane aka chem trails. As fair as the video goes and the fake snow part, snow does melt when you put a lighter to but it doesn't appear to drip because the remaining snow which is porous absorbs the water. So it is basically melting into itself.

It's Sunday and this shit is still around in Mississippi!!!!