It looks like a very close shot. Maybe it's just me but I went out yesterday with my kids to Tokyo Disneyland and the temperature was between mid 30s to mid 40s around noon and I was complaining about the weather already. But after looking at your shot in the snow, I guess I should be thankful for the slightly better weather.
I haven't broke out my 300mm lens but I'm hesitant if I don't bring a tripod. What is the minimum shutter speed do you use when hand holding your lens?
D800 & 300mmF4