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Hurricane Katrina formed on August 23, 2005 and dissipated on August 31 of the same year. It began as Tropical Depression Twelve of the season and caused billions of dollars in damage to become the costliest storm in Atlantic hurricane history.

Hurricane Katrina became a tropical storm in the Bahamas on August 23, 2005 and lost tropical storm strength on August 30, after twice making landfall in the US.

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11y ago

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