New Orleans residents prepare for Isaac

New Orleans residents are preparing for tropical storm Isaac as it moves closer to the city that is still trying to recover from Hurricane Katrina.

Seven years ago tomorrow, Katrina swept through New Orleans killing more than 1,800 people and causing billions of dollars of damage.

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Storm Isaac to be downgraded

Tropical storm Isaac is forecast to become a tropical depression by the National Hurricane Centre later today. The Mayor of New Orleans has enforced a dawn-to-dusk curfew as Isaac continues to lash the city.