I can't grasp this either and keep thinking something is going to knock it off course or slow it down.
For future reference, this repeated line by the mayor and governor that "We went to bed Friday night being told it was a Florida storm, and woke up Saturday to find us threatened" to excuse why they waited so long to start the evacuation plan is total bullshit. (excuse my French)
Friday 4pm NO time report from the NWS, warns of a significant shift west, Mississippi landfall (88.5 on the grid, NO is 90), and possible more movement expected (post #388):
http://www.freerepublic.com/focus/f-news/1471043/posts?page=388#388
By at least Friday 6pm computer models were converging on LA (post #478):
http://www.freerepublic.com/focus/f-news/1471043/posts?page=478#478
Turns out those computer models had been run at 2pm (post #526):
http://www.freerepublic.com/focus/f-news/1471043/posts?page=526#526
In fact some computer models run at 7am NO time Friday had predicted a NO hit(post #224):
http://www.freerepublic.com/focus/f-news/1471043/posts?page=224#224
So unless the gov and mayor went to bed Friday afternoon, they knew then that it likely was headed their way.
But wait, lookee here, Blanco declares a state of emergency about 8pm Friday night. Why do that if they were told it was going to be a Florida hurricane? (post #585)
http://www.freerepublic.com/focus/f-news/1471043/posts?page=585#585