Dan,
My home range is located on a mountain side cut through the pine trees. It is known as a tricky range for wind reading. During the winter months, when the wind is blowing and a dry snow is coming down or dry snow is on the ground, allows one to see the wind pattern more clearly than anything else that I have experienced. You can see the snow devils flow up and down the range. You can see let-ups and pick-ups moving across the entire range. It shows you the hot spots where wind is pushing hardest. You can see how effective your flag set up is in the wind. I can’t say it makes me shoot like a pro, but it does help me visualize the wind patterns on my range. But I must be honest with you, I am getting tired of shooting in the snow; it’s not as fun as it used to be. These days I would rather be next to a hot wood stove and a cold beer.
I can’t comment on a steady snowfall because I don’t recall a session when the snowfall was steady. I have done some of my best shooting in a steady drizzle. I have experienced a couple of sessions when a steady drizzle, mist or fog was present and used it to shoot some good groups. But those days have been few and far between.
Looking at the weather forecast, my part of the country has a few more snow days on the way. I may need to practice on those snow days to stay in tune through the summer.
LE Hanson