Additionally with the storm making landfall in W Jamaica that'll probably cause even greater rainfall and orographic lift on its east side, not to mention the entire island gets 20"+ amounts.
NE movement ideal for surge too
A north to NNE turn will commence very shortly. There's no ridging left to keep this moving west. Tourist heavy Montego Bay will likely get eastern eyewall
At best some moisture will be pulled in. There's no big block to the NE to prevent this from going OTS.
But a strong closed low could pull it further west as it departs thus pulling in moisture
Icon and Canadian also ramped up. Still out there but the potential for something significant is there. We still have no idea what role Melissa's will play but Canadian heavily entrains part of her energy in