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A tropical cyclone is the generic term for a warm-cored, non-frontal synoptic-scale low-pressure system over tropical or subtropical waters around the world. [4] [5] The systems generally have a well-defined center which is surrounded by deep atmospheric convection and a closed wind circulation at the surface. [4]
A very intense tropical cyclone is the highest category on the South-West Indian Ocean Tropical Cyclone scale, and has winds of over 115 knots (213 km/h; 132 mph). [24] [25] At the tenth RA I tropical cyclone committee held during 1991, it was recommended that the intensity classifications be changed ahead of the 1993–94 tropical cyclone season.
Tropical cyclone warnings and watches are alerts issued by national weather forecasting bodies to coastal areas threatened by the imminent approach of a tropical cyclone of tropical storm or hurricane intensity. They are notices to the local population and civil authorities to make appropriate preparation for the cyclone, including evacuation ...
Potential Tropical Cyclone Four expected to strengthen into Tropical Storm Debby At 11 a.m., the disturbance was centered near latitude 20.9 North, longitude 76.6 West. The system is moving toward ...
The outer bands of Tropical Cyclone Alfred are lashing Australia’s east coast with wind and rain as the rare southerly storm’s eye inches closer to landfall expected on Saturday morning.
A Category 4 Atlantic hurricane is a tropical cyclone that reaches Category 4 intensity on the Saffir–Simpson scale. Category 4 hurricanes that later attained Category 5 strength are not included in this list.
Many tropical weather experts consider the ACE index to be a more accurate representation of a season's activity, particularly in recent years with improved tropical cyclone surveillance, than the ...
Cyclone Freddy. Category 4 is the second-highest classification on the Australian tropical cyclone intensity scale which is used to classify tropical cyclones, that have 10-minute sustained winds of at least wind speeds of 86–107 knots (159–198 km/h; 99–123 mph).