Yep.
And I know someone who evacuated New Orleans on the Friday before the storm on Sunday (to Houston).
As there was getting to be more certainty of hitting New Orleans, some still adamantly refused to leave. Even their friends didn't know for several days if they'd survived.
"In a press conference at roughly (Sun Aug 28) 10:00 AM CDT, Nagin declared that 'a mandatory evacuation order is hereby called for all of the parish of Orleans.'"
The hit Monday morning and on Friday, Katrina was in the middle of the Gulf with 110 mph winds. We we watching it, but not too concerned.
Saturday morning Katrina was 150 mph.
In all 90% of the city did evacuate before the storm, and those 10% made the wrong bet.