Tropical cyclone climatology maps
These maps show the average annual number of tropical cyclones through the Australian region in El Niño, La Niña and neutral years.
Product code: IDCJCM0011
About these maps
Tropical cyclones are low pressure systems that form over warm tropical waters and have well defined wind circulations of at least gale force strength (sustained winds of 63 km/h or greater with gusts in excess of 90 km/h).
These maps show the average number of tropical cyclones through the Australian region and surrounding waters in El Niño years, La Niña years, neutral years and using all years of data. The data are based on a 36 year period from the 1969/70 to 2005/06 tropical cyclone season.
The maps are useful for identifying the regions where tropical cyclones are more likely to occur during El Niño years, La Niña years and neutral years. They are also useful for comparing the occurrence of tropical cyclones using all years of data, to the occurrence during La Niña years, for example.