N.H.
In my opinion, it's always good to give someone a 'heads up' or early warning b/c to me, it reflects better on me in the long run if I give them fair warning as opposed to "oh, BTW I won't be paying rent today" which is how they may view it from their perspective. I would give early notice, definitly. Just let them know that you understand & realize about lease agreement & that you are responsible but this is a situation that cannot be helped. Good luck!