well 170, thats the $40.00 question, what is the wind ??
it appears to be light to me, blowing light snow up the hillside, but not strong enough to blow it at a large angle at the top.
if it was a very strong wind, with corn snow being pulled off the hillside, you would see a definate angle to the snow at the crest of the hill.
but those are guesses, you have to be there to determine what is actually happening.