Michael Ferbosses makes his way home through the wind and rain of Isaac in Chalmette, La.,Thursday, Aug. 30, 2012. Isaac's maximum sustained winds had decreased to 45 mph and the National Hurricane Center said it was expected to become a tropical depression by Thursday night. The storm's center was on track to cross Arkansas on Friday and southern Missouri on Friday night, spreading rain as it goes. (AP Photo/David J. Phillip)
Gallery: More photos from Hurricane Isaac
Aug. 30, 2012 @ 11:37 AM
Hurricane Isaac poured unrelenting rain Thursday, flooding areas north and south of New Orleans even as the city's fortified defenses held and forcing officials to launch speedy evacuation and rescue efforts in the face of fast-rising waters.