Tropical Cyclone: A tropical cyclone is a destructive storm that originated in a warm ocean and winds circulate around low pressure. ; The Indian Meteorological Department (IMD) said that the tropical storm has weakened from a ‘Very Severe Cyclonic Storm’ to a ‘Severe Cyclonic Storm’ with a wind speed of 100-110 km per hour,; As per IMD predictions, it would continue to move … Extra-tropical cyclone: An extratropical cyclone is also called as a temperate cyclone. Origin and Development of Temperate Cyclones Polar Front Theory According to this theory, the warm-humid air masses from the tropics … It is developed in mid and high latitude beyond the tropic means between 30 to 60-degree latitude in both hemispheres. Context: Tropical Storm Hikaa develops into Cyclone. A strong subtropical ridge usually steers a tropical cyclone to move along its periphery. Candidates preparing for UPSC IAS Civil Services Prelims Exam 2016 as well as State PCS such as MP PCS, UPPCS, RAS, JPSC etc. How the names are chosen? Stage of formation of the temperate cyclone : How are cyclones named? The systems developing in the mid and high latitude (35° latitude and 65° latitude in both hemispheres), beyond the tropics are called the Temperate Cyclones or Extra Tropical Cyclones or Mid-Latitude Cyclones or Frontal Cyclones or Wave Cyclones. Each Tropical Cyclone basin in the world has its own rotating list of names. Wind speeds may exceed 119 km per hour, it may last from a few days to 3 weeks. Temperate cyclone also called as extra – tropical cyclone or wave cyclones or simply depressions, are atmospheric disturbances having low pressure in the center and increasing pressure outward. As per Ferrel law, it rotates anticlockwise wise in the northern hemisphere and clockwise in the southern hemisphere. Based on their latitude, the cyclones may be tropical cyclones or temperate cyclones (extra-tropical … In Northern Hemisphere, recurvature of a tropical cyclone is defined as the situation when a tropical cyclone transits from a mainly westward track to a northward and sometimes even an eastward track. For cyclones in the Bay of Bengal and Arabian Sea, the naming system was agreed by eight member countries of a group called WMO/ESCAP and took effect in 2004. The tradition of naming cyclones started with hurricanes in the Atlantic Ocean, where tropical storms that reach sustained wind speeds of 39 miles per hour were given names In 1953, the US weather service officially adopted the idea and created a new phonetic alphabet (international) of women’s names from A to W, leaving out Q, U, X, Y and Z. Cyclones and other natural disasters that affect India and the world are important topics for the UPSC exam.It is important for both the geography and the disaster management topics in the UPSC … If the ridge retreats eastward, there is a high … Continue reading "Re-curving cyclones" Most large scale cyclonic circulations are centred on areas of low atmospheric pressure. A Cyclone represents a rotating, organized system of clouds and thunderstorms that originates over tropical or subtropical waters and has closed low-level circulation. ESSAY TEST SERIES 2021- UPSC IAS MAINS Examination The main cause of the development is the formation of the front mainly occluded front. What is a Tropical Cyclone? They are infact low pressure centers produced in the middle latitude characterized by converging and rising air, cloudiness and precipitation. Tropical cyclones are what most people are familiar with because these are cyclones that occur over tropical ocean regions. ... 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