After crossing the state, it intensified over the eastern Gulf of Mexico and became a hurricane on July 30.

A surface trough over the central and eastern Gulf of Mexico prevented significant strengthening.

The storm is estimated to have formed in the eastern Gulf of Mexico on September 16.

Ivan's last-minute turn to the west was due to a mid-level high pressure system over the eastern Gulf of Mexico.

It maintained that intensity as it crossed the island and the eastern Gulf of Mexico.

Ivan also threatened the area as it moved north up the eastern Gulf of Mexico.

The system developed from a tropical wave on July 21 in the eastern Gulf of Mexico.

Is also present in the river systems of the eastern Gulf of Mexico and in some areas further south.

It failed to intensify due to a surface trough over the central and eastern Gulf of Mexico, connected to a cold front.

It can also be found in the eastern Gulf of Mexico.