was an large, long-lived, rare classical Cape Verde-type hurricane
. The cyclone
was the ninth named storm, the sixth hurricane and the fourth major hurricane of the active 2004 Atlantic hurricane season
. Ivan formed in early September and had reached Category 5
strength on the Saffir-Simpson Hurricane Scale
and became the 10th most intense Atlantic hurricane ever recorded. At its peak in the Gulf of Mexico
, Ivan was the size of the state of Texas
. It also spawned 117 tornadoes across the eastern United States.
Ivan caused catastrophic damage to Grenada
and heavy damage to Jamaica
, Grand Cayman
, and the western tip of Cuba
. After peaking in strength, the hurricane moved north-northwest across the Gulf of Mexico to strike Gulf Shores, Alabama
as a strong Category 3
storm, causing significant damage. Ivan dropped heavy rains on the Southeastern United States
as it progressed northeast and east through the eastern United States, becoming an extratropical cyclone
. The remnant low from the storm moved into the western subtropical Atlantic and regenerated into a tropical cyclone, which then moved across Florida
and the Gulf of Mexico into Louisiana
, causing minimal damage. Ivan caused an estimated US$
18 billion (2004 USD, $ USD) in damages to the United States, making it the sixth costliest hurricane ever to strike the country.
On September 2, 2004, Tropical Depression Nine formed from a large......