>> now is not the time to tempt fate. now is ottme t you need to take this seriously. >> reporter: in new orleans, the ls th dur hur kat, ex years ago w big test since a $14 billion upgrade. >> we will probably get street flooding from the rain but, and yay w1 o but we are prepared for all of that. >> reporter: officials stress cosies sll impact more than rob, paula, i think i said at 300 homes and businesses to night are without power. i mean 300,000. and this weather here, it is starting to intensify after isaac made landfall. these conditions here in new orleans, they're exp last, all morning. >> yeah, slow-mover, hours before new orleans and that area of the country is out of the wood on this. in terms of shelters there in the city, did folks fill them