The National Weather Service bulletin for the New Orleans region of 10:11 a.m. , August 28 , 2005 was a vividly worded release issued by the local Weather Forecast Office in Slidell , Louisiana warning of the devastation that the Gulf Coast of the United States could experience as a result of Hurricane Katrina . The National Weather Service bulletin for the New Orleans region of 10:11 a.m. , August 28 , 2005 was a vividly worded release issued by the local Weather Forecast Office in Slidell , Louisiana , warning of the devastation that the Gulf Coast of the United States could experience as a result of Hurricane Katrina .