The atlantic is about 86 up here right now.......as is the Chesapeake - I don't know the temp of the Delaware, but I wouldn't be surprised if it's in the 80s as well.
Could it sustain a Cat5? I have no idea. But even a minimal 1 coming up either Bay would do horrendous damage, not just on the shores, but inland because of all the tributasries and rivers off of both bays.
The bays get pretty hot, but the ocean doesn't, North of Hatteras, where the Gulf Stream leaves the coast;
It's basically thermodynamically impossible to get a Cat 5 actually landfalling N of Hatteras and exceedingly difficult to get a Cat 4, short of drastic climatic change.
Is it just me or was this not really on many people's news radar until about a day ago or even today? Maybe I wasn't paying close attention but I had no inkling something this huge was on the way. (Keep in mind I'm in the Northeast so nowhere near the affected area) But, still, this is a huge national story and I really haven't heard much warning about it. Even today, the rest of the media besides the Weather Channel is virtually ignoring it.
Heck, just think of all the damage Agnes did to the Northeast, and it was barely a hurricane when it hit.