How many cyclones occur each year?
On average there are about thirteen cyclones that form in the Australian region (90-160° E) each cyclone season. This represents about 16 per cent of the global total. About half of these occur in the western region. About half of the total number of tropical cyclones become severe. Tropical cyclones in the western and eastern basins have around 25 per cent chance of making landfall, while those in the northern basin have an 80 per cent chance of making landfall. The map of the incidence of cyclones in the Australian region shows an area north of Port Hedland has the maximum occurrence of cyclones. The graph of cyclone activity in the Australian region shows the total number of severe and non-severe cyclones each year. US Atlantic Oceanographic and Meteorological Laboratory’s Hurricane FAQ: Comparison of the average, highest and least number of cyclones in different parts of the world.
