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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]
Since 1980, tropical cyclones, a generic term for hurricanes and tropical storms, have cost communities $1.4 trillion in damages and claimed more than 7,200 lives, according to The National Center ...
Hurricanes are mixed-phase clouds, meaning that liquid and solid water (ice) are both present in the cloud. Typically, liquid water dominates at altitudes lower than the freezing level and solid water at altitudes where the temperature is colder than -40 °C. Between 0 °C and -40 °C water can exists in both phases simultaneously.
The Saffir-Simpson Hurricane Wind Scale is a 1 to 5 rating based on a hurricane's sustained wind speed. This scale estimates potential property damage. This scale estimates potential property damage.
If a cyclone reaches maximum continuous winds of 74 miles per hour or higher, it is classified as a hurricane, typhoon or cyclone, depending on where the storm originates.
A tropical cyclone may be viewed as a heat engine that converts input heat energy from the surface into mechanical energy that can be used to do mechanical work against surface friction. At equilibrium, the rate of net energy production in the system must equal the rate of energy loss due to frictional dissipation at the surface, i.e.
hurricane or typhoon — A warm-core tropical cyclone in which the minimum sustained surface wind is 74 mph or more. Hurricanes are spawned in the North Atlantic and central and eastern North Pacific Ocean. Typhoons develop in the northwest Pacific. They are known as cyclones in the Indian Ocean and the South Pacific.
During the Atlantic hurricane season, even before a tropical cyclone forms, there are words like “tropical wave,” “tropical disturbance,” “invest” and “potential tropical cyclone.”