Possible Clues:

• Hurricane that devastated New Orleans
• Hurricane that struck New Orleans in 2005
• Subject of Spike Lee's 'When the Levees Broke'
• Devastating name in 2005 news
• Hurricane that flooded much of southern Louisiana in 2005
• Wave runner?
• Devastating 2005 hurricane
• Hurricane that was the subject of 2006's 'When the Levees Broke'
• Pop music's ___ and the Waves