Unlike Joani, I live on the barrier island, only two short blocks from the Gulf, and have to be concerned with whether or not vehicle(s) parked underneath the house would be likely to float in a surge. For a Cat. 1 with little likelihood of intensification and a predicted surge of 5 or 6 ft.(as per the NATIONAL HURRICANE CENTER's official published Discussions, the ONLY valid authority, NOT CNN or anyone else), a decision to evacuate would be borderline, and would partially if not largely depend on whether or not local authorities were planning on shutting off water.
But of course you miss the entire point, Sea. If the best available modeling several days out calls for a major hurricane affecting a population so large that evacuations cannot be safely effected by waiting until just a couple of days ahead of the storm (i.e. once more definitive modeling is available), then the wisest thing to do is call for evacuations at that time, and for people to leave, EVEN IF it turns out to be a full or partial false alarm.
Anything else would be considered almost criminally irresponsible, especially if, AS CAN ALWAYS HAPPEN since intensity forecasting has very admittedly NOT yet reached the accuracy of path tracking, the storm turned out to be just as powerful, if not more so, than originally predicted.
Then the loss of life would be blamed on the NHC, and you would be the first one outraged over it, and you know you would, so please use your common sense, read only the NHC's updates -- the best and highest source of hurricane info currently available in the nation if not the world -- and stop these useless rants.