I have noticed that! I have just finished watching your couch video! I am speachless! The speed and the cycling just going on and on! Where are you hiding the engine?
No dear Lena, this is no real snow! I suppose that the peaks of the original ice-crystals were melted by the sun. After the sun had disappeared, the molten drops of water are frozen to small ice pearls. Now you see a mixture of crystals and frozen drops which look like lilac blossoms :-)))