Irene has quite a bit more warm ocean to go, particularly if the current trend toward the north-northeast continues. It is conceivable that on its current heading a "direct hit" is avoided, but Irene could end up with more time over water, very warm water, slowing the weakening process, and possibly even helping crack open a window for some renewed strengthening - however, enhancement is not the official forecast, and NHC places the odds of a new round of appreciable intensification at under 20%.