Of those, 47 reach strength higher than 119 km/h (74 mph), and 20 become intense tropical cyclones (at least Category 3 intensity on the Saffir–Simpson scale).Climate cycles such as ENSO and the Madden–Julian oscillation modulate the timing and frequency of tropical cyclone development. Rossby waves can aid in the formation of a new tropical cyclone by disseminating the energy of an existing, mature storm. Kelvin waves can contribute to tropical cyclone formation by regulating the development of the westerlies. Cyclone formation is usually reduced 3 days prior to the waves crest and increased during the 3 days after. Rapid intensification
On occasion, tropical cyclones may undergo a process known as rapid intensification, a period in which the maximum sustained winds of a tropical cyclone increase by 30 kn (56 km/h; 35 mph) or more within 24 hours. Similarly, rapid deepening in tropical cyclones is defined as a minimum sea surface pressure decrease of 1.75 hPa (0.052 inHg) per hour or 42 hPa (1.2 inHg) within a 24-hour period; explosive deepening occurs when the surface pressure decreases by 2.5 hPa (0.074 inHg) per hour for at least 12 hours or 5 hPa (0.15 inHg) per hour for at least 6 hours. For rapid intensification to occur, several conditions must be in place. Water temperatures must be extremely high (near or above 30 °C (86 °F)), and water of this temperature must be sufficiently deep such that waves do not upwell cooler waters to the surface.
Extratropical cyclones can also be dangerous when their low-pressure centers cause powerful winds and high seas.A subtropical cyclone is a weather system that has some characteristics of a tropical cyclone and some characteristics of an extratropical cyclone. They can form in a wide band of latitudes, from the equator to 50°. Although subtropical storms rarely have hurricane-force winds, they may become tropical in nature as their cores warm. See also
Tropical cyclones in 2022
2022 Atlantic hurricane season
2022 Pacific hurricane season
2022 Pacific typhoon season
2022 North Indian Ocean cyclone season
2022–23 South-West Indian Ocean cyclone season
2022–23 Australian region cyclone season
2022–23 South Pacific cyclone season

References
External links

United States National Hurricane Center – North Atlantic, Eastern Pacific
United States Central Pacific Hurricane Center – Central Pacific
Japan Meteorological Agency – Western Pacific
India Meteorological Department – Indian Ocean
Météo-France – La Reunion – South Indian Ocean from 30°E to 90°E
Indonesian Meteorological Department – South Indian Ocean from 90°E to 125°E, north of 10°S
Australian Bureau of Meteorology – South Indian Ocean and South Pacific Ocean from 90°E to 160°E
Papua New Guinea National Weather Service – South Pacific east of 160°E, north of 10°S
Fiji Meteorological Service – South Pacific west of 160°E, north of 25° S
MetService New Zealand – South Pacific west of 160°E, south of 25°S