Isaac is now a hurricane which is expected to landfall on Tuesday night in New Orleans and Louisiana. Here is the news:
Isaac finally reached hurricane strength on Tuesday, closing in on New Orleans and the entire Louisiana coast as a slow-moving giant expected to make landfall Tuesday night and then dump up to 20 inches of rain in some spots.
"It's going to be a long period of really bad weather" for the Louisiana and Mississippi coasts as well as areas inland, National Hurricane Center Director Rick Knabb told MSNBC.
New Orleans Mayor Mitch Landrieu said he expects his city "will get the brunt of it."