<Li> Effects on Florida </Li> <Li> Effects on Mississippi </Li> <Li> Effects on New Orleans <Ul> <Li> Levee failures </Li> <Li> New Orleans Hornets </Li> <Li> New Orleans Saints </Li> <Li> Superdome </Li> <Li> Tulane University </Li> <Li> Infrastructure repairs </Li> <Li> Reconstruction </Li> </Ul> </Li> <Ul> <Li> Levee failures </Li> <Li> New Orleans Hornets </Li> <Li> New Orleans Saints </Li> <Li> Superdome </Li> <Li> Tulane University </Li> <Li> Infrastructure repairs </Li> <Li> Reconstruction </Li> </Ul>

When did officials know that hurricane katrina was the big one