I have to agree with Extreme on this one and not b/C we are from the same state...
Katrina was definitely losing her punch right up until landfall given her eroding NW/W side to due dry air and her suspect ERC. This has been stated in the her report. There has /was no evidence of sustained cat 4 winds, (ON THE GROUND) either by instruments or damage. I had trees snap and uproot with 5O mph winds from Alicia. And just to pile on some more since I am law major. There is different levels of "Proof" in law which in this case could be applicable for this disagreement. You have "beyond a reasonable doubt" (criminal) preponderance of evidence" (civil).....I believe that given the "preponderance of evidence" against cat 4 winds, Katrina will never be upgraded. A2k, you don't have the evidence (proof) to support your argument....in fact, it could be said that your argument for cat 4 winds at landfall can only be defined as subjective "evidence".
No proof... Carry your happy butts over here and look. You also had 20 something inches of rain from Alicia and tree damage depends on the type of tree and age.
Again, no proof of cat5 damage in Andrew either, just piss poor construction.
Instruments failed or lost power in Katrina long before the eye came ashore. Look at the radar from Mobile as Katrina was making landfall for the 2nd time. The nw and ne eyewall was restrenghthening.
By the way, people have been convicted of crimes using circumstantial evidence.