Isaac Becomes a Hurricane
Isaac is now a full blown Category 1 Hurricane with winds speeds of 75 mph.
Isaac is expected to arrive in Louisiana late tonight or early Wednesday. It continues a Northwest track over the Gulf of Mexico.
Isaac could flood the coasts of four states as it moves closer to New Orleans.
People are filling a municipal auditorium that's been turned into a shelter in the city of Houma, southwest of New Orleans.
One man who's there with his wife and their teenage sons says he rode out hurricanes when he was younger, but that was before he saw the damage from hurricanes Andrew, Katrina and Rita.