 For instance the World Meteorological Organization define three different basins for the tracking and warning of tropical cyclones.These are the South-West Indian Ocean between the African Coast and 90°E, the Australian region between 90°E and 160°E and the South Pacific between 160°E and 120°W.The United States Joint Typhoon Warning Center also monitors the whole region, but splits it at 135°E into the South Pacific and the Southern Indian Ocean.