I did exactly the same thing except that I unearthed them after only ten years in the pantry when we were moving house. They were fine and no one got sick! I had lemons with cardamom and limes with chile flakes and only the texture suffered.
I think I'm about 200 miles from Mike, but this is what we were seeing last night! (Well, the camera makes it more vivid, but it was still amazing with the naked eye.) I'd call this my first good aurora viewing. And it might be good viewing again tonight.