Only about a third of the residents of Jefferson and Orleans actually left the two-parish area during Hurricane Georges, and even this number produced tremendous traffic jams on the interstates. A majority of those who left town waited until the last 24-30 hours before the projected arrival of the storm. In New Orleans, poor black residents and and older white residents were highly unlikely to leave the city. Respondents in both parishes rated their public officials very positively for their handling of the hurricane and evacuation.
Howell, Susan E., "Evacuation Behavior in Orleans and Jefferson Parishes - Hurricane Georges" (1998). Survey Research Center Publications. Paper 32.