The next night, more than a dusting of snow fell. The snow was carried by a strong wind from the West. It blew the snow across the picture from the right side to the left side. This is why half of the forest of white and the other half of forest is the normal color green. What doesn't make sense, is the trees that are covered in snow are covered in what seems to be almost a foot of snow. It must have been one crazy storm that blew through.