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The sixth tropical cyclone and the second severe tropical cyclone of the 2020–21 Australian region cyclone season, while being the third severe tropical cyclone of the annual South Pacific cyclone season, Niran was the second Category 5 severe tropical cyclone in the South Pacific cyclone season, following Cyclone Yasa.
Tropical cyclones are non-frontal, low-pressure systems that develop, within an environment of warm sea surface temperatures and little vertical wind shear aloft. [1] Within the Australian region, names are assigned from three pre-determined lists, to such systems, once they reach or exceed ten–minute sustained wind speeds of 65 km/h (40 mph), near the center, by either the Australian Bureau ...
[48] [49] Four sets of tropical cyclone names are rotated annually with typhoon names stricken from the list should they do more than 1 billion pesos worth of damage to the Philippines and/or cause 300 or more deaths. [50] [51] Should the list of names for a given year prove insufficient, names are taken from an auxiliary list. [50]
A collage of the ten deadliest tropical cyclones worldwide since 1990 This is a list of the deadliest tropical cyclones , including all known storms that caused at least 1,000 direct deaths. There were at least 76 tropical cyclones in the 20th century with a death toll of 1,000 or more, including the deadliest tropical cyclone in recorded history.
[3] [14] The four lists of names are rotated every four years, with the names of significant tropical cyclones retired if they have caused at least ₱1 billion in damage and/or at least 300 deaths within the Philippines; [14] [15] replacements to retired names are taken from the agency's list of reserved names. [14]
Three tropical cyclones: Habana (left), Marian (middle left) and Niran (right) co-exist in the Southern Hemisphere on March 5. In the month of February, four tropical disturbances formed out of which two were named, being given the names Marian and Niran respectively. Marian formed on February 23 and rapidly intensified into a Category 3 severe ...
On March 6, Niran transitioned into an extratropical cyclone, and two days later, Niran was absorbed into another larger extratropical storm to the south. Niran caused at least $200 million (2021 USD) in damages, the vast majority of which came from banana crop damage in Queensland. No deaths were reported from the storm.
Highest Accumulated cyclone energy (ACE) index for a season: 570 during the 1997 Pacific typhoon season: January 19, 1997 – December 23, 1997: Northwest Pacific Ocean [14] Highest number of rapid intensification cycles for a tropical cyclone: 7: February 4, 2023 – March 14, 2023: Cyclone Freddy in the Australian region and South-West Indian ...