Katrina was a tropical storm until a couple of hours before making Florida landfall as a Cat 1 hurricane. It, like Isaac, did not intensify ujtil it hit hot Gulf waters.
I hope the similarities end there.
People are underestimating this storm right now because the eye is over cool deep waters .This is going to change once it hits the Gulfs 88F+ waters .
It will most likely be a cat 1 over the keys and then build up to at least a cat 2 once it gets between Naples and Tampa (should be offshore in the Tampa Bay area on the low tide so that’s good for the area but they will still see flooding from the surge ).
This storm has not started it’s intensification process yet.