I can't recall any EPAC disturbance or greater moving into the Caribbean. Atlantic storms can and do move into the E Pacific from time to time. E Pacific storms generally become hazards and or rain producers to the Desert Southwest and California, before moving further eastward.
But there is a first time for everything.

I just checked the model updates and the 84 to 120 hr GFS isn't scheduled to complete it's run until 0428Z or 12:28 AM EDT.

**Note: Jim Cantore at TWC just updated his sat and radar imagery on the Puerto Rico area. System seems to be on the decline. Sun going down and loss of daytime heating.
Still an area to watch as it's been very persistant/ stagnant.