The 11 Most Damaging U.S. Weather Disasters of 2012

By Amelia Hennighausen - 2013-01-03T19:15:32Z

Photograph by Gerald Herbert/AP Photo

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Hurricane Isaac Hits Louisiana

Presidential candidates typically emerge from their nominating conventions to campaign in states that will be intensely contested in the general election. Instead, Republican nominee and former Massachusetts Governor Mitt Romney left the party's Tampa convention for New Orleans to visit a community flooded from storm surges created by Hurricane Isaac.

Isaac came ashore in Louisiana as a Category One hurricane, with winds higher than 74 mph, turning southern Louisiana into a miles-long pond of brackish, foul-smelling floodwaters. Snakes, birds and a lot of livestock raised by a handful of ranching families drowned in Isaac's storm surge, which overwhelmed the weak levees protecting this farm country (left) south of New Orleans.

Cows are seen stranded in floodwater after Hurricane Isaac came through the region in Plaquemines Parish, Louisiana, on Aug. 30.

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