It moved over cooler water and is going through eyewall replacement. It might intensify back to CAT5 as it moves over deep warm water.
Yep. ERC is completing, she held her strength pretty well, She is heading into a very warm eddy, and she is approaching the nighttime diurnal maximum. All the ingredients are there for her to ramp back up tonight.
The good news is that the coastal waters should not be able to sustain a CAT 5. Therefore, she will weaken some, we can pray that some dry air will entrain and help weaken her even more as she makes landfall. Unfortunately, even with that we are looking at a Katrina scenario in that even weakened she will most likely still be a CAT 4.