New Orleans flood defences 'working as expected'
The US Army says the New Orleans flood defence system is "working as expected for Isaac".
Curfew in force as Isaac is downgraded to tropical storm
A dusk-to-dawn curfew is in force in New Orleans tonight after Hurricane Isaac brought flooding and stranded dozens of people.
Hurricane Isaac arrives exactly 7 years after Katrina
With mean winds of 80mph and higher gusts, flooding is the biggest threat as Hurricane Isaac pushes up through Louisiana.
Hurricane Isaac hits Louisiana seven years after Katrina
New Orleans has been left with localised flooding and 70% of people are without power as Hurricane Isaac passes up Louisiana.