Snow Powder

Most mornings here there is a "dusting" of snow. The first morning that I brushed it off my car, I thought 'this is as fine as icing sugar!'. The snow dust goes right thought any cracks where the door isn't quite sealed shut. One morning I came out and the window was down a smigg and the seat inside the car was covered in white powder. It stick to the window and must be brushed off but it is oh so fine. Baby powder fine ....baking powder fine .... get the picture. I HAVE seen a few snow flakes but mostly snow dust. I don't remember this from the first time we lived up here. Is this new???