Decreasingly so.
Also how come they do no have military C-130s airlifting those people who cannot get out?
Part of the problem is time. As recently as Friday night-Saturday morning, this was thought to be a Mobile/Pensacola event. To realistically evacuate an area the size of New Orleans, you need 72 hours (according to reports on WWL and WDSU). They just plain didn't have enough time.
Nope, that is the myth being put out by the governor and mayor to try and excuse why they were so slow to react. I went back and checked, and there were computer models predicting an LA hit as early as 7am Friday, strong model agreement on such by 2pm, at 4pm there was a weather service call to move the track west towards a S. Mississippi hit with possible further westward shifts, and by 8pm Friday night Gov. Blanco had declared a state of emergency.
http://www.freerepublic.com/focus/news/1472323/posts?page=2374#2374