If you can't ever remember the difference between and "watch" and a "warning," this is how I remember it.

"Warning" has more letters in it than "watch," so that helps me remember a warning is worse than a watch. If you want to get all technical, a "warning" means that: the weather element (hurricane, flood, tornado etc) is happening right this very second someplace within the radar field. A "watch" means that: if all the weather elements line up the way they're supposed to, there's a good possibility for the weather element to happen.

Glenn says there's no use in remembering the technical side- just remember that "warning" has more letters and that makes it worse than a "watch." Ask him sometime about his "manhole" analogy.  Or don't unless you've got a couple hours for a famous Glenn story that never ends, but don't ever say I didn't warn you.

Anyway, the following counties in New York are under a tornado watch: Broome, Chenango, Delaware, Tioga and Tompkins.  In Pennsylvania, Susquehanna is under a tornado watch.  All watches are effective until 5pm.