To gain an additional 24 hours you would be saying that they should have started the evacuation on Friday morning instead of Saturday morning.
The 11:30 AM Friday morning official NHC track predicted landfall near Panama City Florida. At that point Apalachicola and Panama City had almost TWICE the probability of being the center of this event than New Orleans. Friday afternoon to evening is when things began to change dramatically, and by Sat morning it was clear that LA was at risk, and it was Saturday morning when the evacuation began.
Once again, the key issue is not whether New Orleans should order an evacuation every time a hurricane is in the Gulf. Instead, the key question is why there was absolutely no plan to get those without cars out of a city below sea level. And the bonus question is how many other gaping holes are there in disaster plans around the country, at a time when we are worried about dirty bombs or biological attacks as well as natural disasters?
You've got your timeline mixed up - mandatory evacuation began Sunday morning.
Why can you not understand that what you see on TV from the NHC is for public consumption for people watching on TV not for those that have to lead the Evacuation? I told you before that as an example During Hurricane Andrew while the Tv stations who normally overhype the crap out of everything(especially miami TV Market) were underplaying any threat, we were getting the Notification from the State EOC to Mobilize ASAP. A lot of freepers were a lot more reliable than what you saw being reported by the NHC. We have a plethora of highly educated freepers that were doing a great job of predicting where it would go and how bad it would be. If you hire idiots through crony-ism and corruption like what happens in Louisiana, you do not have competent employees to handle such an astronomical job. Competent also means taking the advice of EOC to order mandatory evacuation in the most susceptible areas. I do not expect you to know any of this before, but get real,now you know.