Per WWL--
The key to following Katrina's path is to watch the longitude. At 1:00 P.M. the eye longitude was 88.6; if the eye continues west to 90.0 then New Orleans will be smashed. The eye is currently headed northwest, so this is going to be close!
New Orleans is exactly at 90.0 longitude?
FNC just had an animation of the current projected track as it comes ashore. Its comes in east of NO, but its close.