An aerial view shows flooding caused by Tropical Storm Hanna in Gonaives, Haiti September 1, 2008. Heavy rains flooded parts of Haiti with head-high water on Tuesday and sent walls of mud down the hillsides, killing at least 25 people as Tropical Storm Hanna swirled over the Bahamas and took aim at the southeastern United States. Picture taken September 1, 2008.(Xinhua/Reuters Photo)

An aerial view shows flooding caused by Tropical Storm Hanna in Gonaives, Haiti September 1, 2008. Heavy rains flooded parts of Haiti with head-high water on Tuesday and sent walls of mud down the hillsides, killing at least 25 people as Tropical Storm Hanna swirled over the Bahamas and took aim at the southeastern United States. Picture taken September 1, 2008.(Xinhua/Reuters Photo)