Last night, a line of bad weather stretched laterally across most of Kentucky, and was moving south toward Nashville.  We were under a Tornado Watch for about an hour and a half.  One of the great benefits of a storm door (which we only recently installed; I’ve never lived at a place with one before now) is the ability to open the main door and watch the outside through a safely-locked triple-pane of glass.  The wind began to thrash the tops of the trees; the darkness over the neighborhood was …