Yeah, seems reasonable. It's unexpected given the massive wind speeds, you'd expect the wind to force the snow over the obstacle at such speed it wouldn't have a chance to drop. I suspect some sort of vortex effect. It was remarkable, driving around today at just how many places exhibited it. Even on our street, which faces East, the snow came up, to the end of the cul de sac then settled on my neighbours drive opposite (his house faces South, so the walls are East and West) squarely up against the West facing wall.