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Cyclone Marcus at peak intensity on 21 March 2018, over the Indian Ocean to the west of Australia. Category 5 severe tropical cyclones are tropical cyclones that reach Category 5 intensity on the Australian tropical cyclone intensity scale within the Australian region. They are by definition the strongest tropical cyclones that can form on Earth.
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 ...
These four regions are named the Western region, the Northwestern sub-region, the Northern region and the Eastern region. The Australian region overall averages eleven tropical cyclones in a season, and the bureau assesses the region as a whole to have a high level of accuracy when forecasting tropical cyclone activity. [6]
The first are the international names assigned to a tropical cyclone by the Japan Meteorological Agency (JMA) or the Joint Typhoon Warning Center (JTWC). The second set of names are local names assigned to a tropical cyclone by the Philippine Atmospheric, Geophysical and Astronomical Services Administration. This system often ends up with a ...
August 23, 1863: A Category 1 hurricane hit Nova Scotia just before losing tropical characteristics. September 23–24, 1866: A hurricane hit Newfoundland after weakening from a Category 2 hurricane. October 5, 1869: The 1869 Saxby Gale struck Canada's Bay of Fundy region damaging parts of New Brunswick and Nova Scotia, killing 37 people offshore.
1998 – Category 4 severe tropical cyclone (Australian scale), formed west of the Australian coast and moved out to sea. 2022 – Category 2 tropical cyclone (Australian scale), made landfall over Northern Queensland, crossed the Gulf of Carpentaria, then made landfall over the Northern Territory. Tilda; 1954 - A Category 4 that affected the ...
2011† – a severe tropical cyclone bringing heavy rainfall over Northern Australia where a record three-day total of 684.8 mm (26.96 in) rain was recorded at Darwin International Airport; 2015 – a small tropical cyclone which brushed the western coast of Mexico; 2017 – a tropical cyclone that persisted off the coast of Madagascar
Before the formal start of naming, tropical cyclones were often named after places, objects, or saints' feast days on which they occurred. The credit for the first usage of personal names for weather systems is generally given to the Queensland Government meteorologist Clement Wragge, who named systems between 1887 and 1907.