Boberdz...

You are aware that during major hurricane evacuations like this one Interstate 55 through Mississippi is closed to southbound traffic and all four lanes are made northbound? You may have to take US 51 south from Memphis. If you do, expect traffic to be bad as it will be carrying all the southbound traffic 55 usually carries. And if the weather gets bad enough that you have to pull off the highway, don't park under trees. Katrina's already killed people by dropping trees onto their parked cars.