It IS called "termination dust".
What is termination dust? It is "the first, light dusting of snow; on the very tips of the mountains. It's a warning. The first, big snow is just around the corner. This of course, triggers a huge shopping frenzy" (from some Alaska slang website I found). Why am I bringing this up now? Funny you should ask. Ask I was sitting here doing up yesterday's post, this happened right out my window:
Yep. Termination dust has hit the mountains right across the river from us, as if to say, "Oh, the first day of fall was this week? Hahahaha. We'll see about that." I guess it's time to start looking into snow tires and parking in the garage. Ahh...Alaska, what an adventure you are turning out to be.