Me, earlier this week walking to the supermarket: "Boy, it's funny. The western sky has odd colors. They vaguely remind me of the Mount Pinatubo colors from so many years ago. But there hasn't been any eruption lately."
Me, just now, reading Space Weather: Facepalm. Aleutian volcanic eruption a couple of weeks ago.
Also see WGN weather blog for a number of identical "Boy, what a sunset" posts.
EDIT: And thinking about it made me remember catching some news on Highly Allochthonous about how three of the Aleutian volcanoes were erupting and whether the volcanism was related.