This animation shows the position of the eye of Hurricane Ivan, as well as, the intensity of the storm. The intensity of the storm is depicted through color. Purple is the weakest classification, Tropical Depression, where winds are less then 39 miles per hour. Blue represents a Tropical Storm with winds between 39 and 73 miles per hour. Blue-Green shows a Class 1 Hurricane with winds between 74 and 95 miles per hour. Green displays a Class 2 Hurricane with winds between 96 and 110 miles per hour. Yellow is a Class 3 Hurricane where winds are sustained between 111 and 130 miles per hour. Orange is a Class 4 Hurricane with winds between 131 and 154 miles per hour. Red is the most deadly classification where winds are greater then 155 miles per hour.

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Please give credit to NASA GSFC Scientific Visualization Studio.

This resource has a thumbnail image at 'This picture shows the position of the eye of Hurricane Ivan, as well as, the intensity of the storm. The intensity of the storm is depicted through color. Purple is the weakest classification, Tropical Depression, where winds are less then 39 miles per hour. Blue represents a Tropical Storm with winds between 39 and 73 miles per hour. Blue-Green shows a Class 1 Hurricane with winds between 74 and 95 miles per hour. Green displays a Class 2 Hurricane with winds between 96 and 110 miles per hour. Yellow is a Class 3 Hurricane where winds are sustained between 111 and 130 miles per hour. Orange is a Class 4 Hurricane with winds between 131 and 154 miles per hour. Red is the most deadly classification where winds are greater then 155 miles per hour.'

Author: Lori Perkins
NASA GSFC Scientific Visualization Studio

Principal Investigator: J. Marshall Shepherd
NASA/GSFC