Looks like the eye wall is going to hit the island.....
Go-Jamaica Hurricane Dean Watch
http://go-jamaica.com/blog/
It is going to be -real- close.
Not scientific but I have seen many cases where a hurricane will shift to the right of it’s mean direction once the outer bands start interacting with a land mass.
Very evident when Katrina made the “miraculous” easterly jog away from New Orleans.
Hurricane bears down on Jamaica
Link to NASA Images from space...at the BBC Website.