I was at Sprague Lake today, which is frozen over. It was snowing and the wind was blowing, so there were little snow puffs and whirls floating across the frozen lake surface. There was this old downed tree giving me some foreground, too. All I had to do was get a relatively slow shutter speed and nail the exposure. Due to the high contrast of the scene, I decided to use bracketed exposures and a graduated ND filter mounted upside down (snowy lake surface much brighter than storm clouds). Flare, among many other things, contributed to this not working out.