Isaac tracks through the Gulf of Mexico
Victims of Hurricane Isaac carry boxes of food from an aid distribution center Aug. 31 in New Orleans, La.
Orange groves are flooded by water from the Gulf of Mexico along highway Route 23 in Hurricane Isaac-hit Plaquemines Parish, La., Aug. 31.
Members of the Louisiana Air National Guard work to distribute water and prepackaged food to victims of Hurricane Isaac on Aug. 31 in Belle Chasse, La. Isaac sloshed north into the central U.S. after flooding stretches of Louisiana and Mississippi and knocking out power, leaving entire water-logged neighborhoods without lights, air conditioning or clean water.
A cow is stuck in mud Aug. 31 as water pushes in from the Gulf of Mexico along highway Route 23 in Hurricane Isaac-hit Plaquemines Parish, La.
Republican presidential candidate Mitt Romney, accompanied by Sen. David Vitter, R-La., talks with local residents Aug. 31 during a tour of areas flooded by Hurricane Isaac in Jean Lafitte, La.
A truck driver collecting stalled cars checks the depth of flood waters before advancing Aug. 31 in LaPlace, La.
Caskets sit among the debris piled along a road Aug. 31 in English Turn, La., in the aftermath of Isaac. Isaac became a tropical depression and the center was on track to spread rain across Arkansas and southern Missouri.
Residents of Mandeville, La., walk through a flooded street as Isaac passes through on Aug. 30.
Sherry Henson and Charmin Cosse try to save a cow along Highway 23 in Louisiana's Plaquemines Parish on Aug. 30.
Buster stands behind sandbags as around his home in LaPlace, La., on Aug. 30.
Danessa Lee comforts her granddaughter Ashanti Lee, 12, after their family was rescued in Pearlington, Miss., on Aug. 29. A number of residents of the small community were trapped by the rising waters and had be rescued or waited until low tide when waters receded.
Rescue workers transport residents in the River Forest subdivision of LaPlace, La., on Aug. 29.
A tree lies atop a cemetery tomb in Plaquemines Parish, La., on Aug. 29. The parish, south of New Orleans, was the most heavily damaged by Isaac.
People wait in line to eat at one of the few restaurants opened in New Orleans' French Quarter on Aug. 29.
A car drives down Canal Street during Hurricane Isaac on Aug. 29, in New Orleans, La.
Lessie Lewis, Devin Lewis, Kodi Lewis and Cindy Lewis stand on the front porch as floodwaters surround their home on St. Roch Avenue in New Orleans, La., on Aug. 29.
Elaine Maltese is lifted out of a boat by Drug Enforcement Agency Special Agent Keith Billiot after being rescued from her flooded home in Braithwaite, La., on Aug. 29.
Research students from the the University of Alabama measure wind speeds as Hurricane Isaac whips through New Orleans on Wednesday, Aug. 29 -- seven years to the day that Katrina struck.
Isaac pushes water over the seawall in Waveland, Miss., on Aug. 29.
Satellite captures moonlit Hurricane Isaac
Just after midnight on Aug. 28, the Visible Infrared Imaging Radiometer Suite on the Suomi-NPP satellite captured this nighttime view of Isaac and the cities near the Gulf Coast.
This Aug. 28 satellite image provided by NASA shows Hurricane Isaac over the Gulf of Mexico as it approaches New Orleans.The hurricane made landfall Tuesday evening on Louisiana's southeast coast with 80 mph winds.
A sheriff's vehicle sits in floodwaters on Thursday, Aug. 30, north of LaPlace, La, off Lake Pontchartrain. 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.
Members of the Louisiana National Guard clean up fallen branches along St. Charles Ave. in New Orleans on Aug. 30.
Isaac Fields and Victor Jones use street signs to paddle out of their flooded neighborhood on Aug. 30 in LaPlace, La.
Policeman Jeff Theriot carries 21-month-old Nicholas Parker as Lanedra Parker, the infant's mom, follows during an evacuation in Slidell, La., on Aug. 30.