A 41-page assessment by the Department of Homeland Security's National Infrastructure Simulation and Analysis Center (NISAC), was delivered by e-mail to the White House's "situation room," the nerve center where crises are handled, at 1:47 a.m. on Aug. 29, the day the storm hit, according to an e-mail cover sheet accompanying the document.
The NISAC paper warned that a storm of Katrina's size would "likely lead to severe flooding and/or levee breaching" and specifically noted the potential for levee failures along Lake Pontchartrain. It predicted economic losses in the tens of billions of dollars, including damage to public utilities and industry that would take years to fully repair. Initial response and rescue operations would be hampered by disruption of telecommunications networks and the loss of power to fire, police and emergency workers, it said.
In a second document, also obtained by The Washington Post, a computer slide presentation by the Federal Emergency Management Agency, prepared for a 9 a.m. meeting on Aug. 27, two days before Katrina made landfall, compared Katrina's likely impact to that of "Hurricane Pam," a fictional Category 3 storm used in a series of FEMA disaster-preparedness exercises simulating the effects of a major hurricane striking New Orleans. But Katrina, the report warned, could be worse.
The hurricane's Category 4 storm surge "could greatly overtop levees and protective systems" and destroy nearly 90 percent of city structures, the FEMA report said. It further predicted "incredible search and rescue needs (60,000-plus)" and the displacement of more than a million residents.
The NISAC analysis accurately predicted the collapse of floodwalls along New Orleans's Lake Pontchartrain shoreline, an event that the report described as "the greatest concern." The breach of two canal floodwalls near the lake was the key failure that left much of central New Orleans underwater and accounted for the bulk of Louisiana's 1,100 Katrina-related deaths...
President Bush, in a televised interview three days after Katrina hit, suggested that the scale of the flooding in New Orleans was unexpected. "I don't think anybody anticipated the breach of the levees. They did anticipate a serious storm," Bush said in a Sept. 1 interview on ABC's "Good Morning America."
I guess we can add that to the Katrina time-line...