As the forecaster on duty at the National Hurricane Center, Dr. Rick Knabb will never forget the sights and smells of the Gulf Coast after Katrina. | The Weather Channel

National Hurricane Center on Instagram: "Hurricane Katrina 20th Anniversary: Advancements in Track Forecasting (Part 3 of 5) Friday, August 29 is the 20th anniversary of Hurricane Katrina making landfall along the U.S. Gulf coast and devastating the coasts of Mississippi and southeastern Louisiana. A lot has changed since 2005. In this video, Senior Hurricane Specialist John Cangialosi talks about the advancements NHC has made since Hurricane Katrina in forecasting where tropical cyclones will m