Hurricane Katrina Forecast Maps

Here's the link. The National Hurricane Center made an animated sequence of their forecast maps for Katrina (I suggest hitting STOP and using ADVANCE ONE). The night of August 26/27 was when the forecast shifted from a Cat 2 Pensacola landfall to a Cat 4 New Orleans landfall (frames 12-16). I didn't live in Louisiana at the time, but it was hard enough watching it unfold on radar.

This is the first one that showed a New Orleans-area landfall, roughly 56 hours before the Buras landfall: