That sounds about right to me. I'm guessing that Ernesto will emerge off the northern coast of Cuba as a depression. The latest GFDL track would require significant continued westward movement, yet this weak storm seems to be oozing poleward already and I don't see anything in particular that would hinder it from continuing in that direction. Perhaps it may graze southeastern Florida as it tries to pull itself back together, but I think this will be an event for the Carolinas -- not Florida.