As usual, Brendan's got the explanation. By no means does this change the strong likelihood that New Orleans wakes up to severe and unprecedented flooding tomorrow. What does change is the down-the-road impact Katrina makes on coastal areas and particularly inland.
I hope it continues to weaken. We have a few more hours in the water for Katrina to simmer down to a more manageable hurricane. Once again the unpredicted becomes the norm. If nothing else we've been able to watch one of the more remarkable hurricanes in history.
Stay strong, New Orleans.