Today was a good day to be thirteen floors up watching snow out a big window. I am completely mystified by the way that snowflakes and raindrops never hit the windows. Okay, two flakes hit the window today, but it's pretty rare. I imagine that there must be some principle at work here, but I don't know what it is.
If anyone knows, please tell me. Or at least tell me where to look to find out about this. My guess is that something about air flow involved. The building is shaped like a canned ham, if that helps.