Hurricane Isaac slammed into Louisiana and Mississippi not once but twice Tuesday night, with heavy downpours, storm surges of up to 12 feet and winds up to 80 miles per hour. The storm made landfall as a Category 1 hurricane, which has winds between 75 and 95 miles per hour. Over 400,000 people lost power, and most New Orleans levees held. The worst flooding occurred when the storm pushed water over the top of an 18-mile stretch of one levee in thinly populated Plaquemines Parish.
The slow-moving storm continues to lash the Gulf coast today -- the seventh anniversary of Hurricane Katrina. The 2005 storm made landfall as a Category 4 hurricane (winds between 130 and 156 mph), killing 1,800 people and exposing catastrophic human failures in hurricane preparedness. Levee, power and emergency response systems have been upgraded in the years since.
Left, Chuck Cropp, center, his son Piers, left, and wife Liz, right, wade through floodwaters from Hurricane Isaac in New Orleans.
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