1) Prior to Hurricane Katrina, less popular media sources provided more effective coverage by exploring infrastructure issues and the risks of major storms, while mainstream media focused only on local impacts.
2) As Hurricane Katrina made landfall, mainstream media coverage was initially vague and downplayed the severity, but later reporting provided detailed assessments of the damage and relief efforts.
3) Most news coverage following Hurricane Katrina was effective in informing the public about response failures and how to help with recovery.