Army to remain on alert in New Orleans for up to 24 hours
- The US Army says it expects to remain on high alert in New Orleans for the next 12 to 24 hours
- A pumping station which briefly stopped working is now functioning again
- The system was given extensive repairs following catastrophic failures when Katrina hit in 2005
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.