A valuable resource in assessing what went wrong (and right) in the response to Katrina is this timeline, compiled by blogger Rick Moran from the New Orleans Times-Picayune website.

The best source for New Orleans hurricane insight has been the blog of Brendan Loy, a 23-year-old law student at Notre Dame University. Loy, armed only with publicly available information from the National Weather Service and others, warned early on for an evacuation of the city.