“Exact”, no. That’s one reason the “cones” in these events are as wide as they are. But even to my “weather buff” eye, it looks likely (likely!) that Irma will turn NNW, by about this time tomorrow, with the timing a bit uncertain.
At any rate, NHC knows a lot more about it than we do.
Possible. But we were told if it got over Cuba all bets were off. She just veered SW into Cuba.