{"id":30004,"date":"2024-02-26T13:18:07","date_gmt":"2024-02-26T13:18:07","guid":{"rendered":"https:\/\/edukemy.com\/blog\/?p=30004"},"modified":"2024-02-27T05:03:20","modified_gmt":"2024-02-27T05:03:20","slug":"tropical-cyclones-upsc-indian-geography-notes","status":"publish","type":"post","link":"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/","title":{"rendered":"Tropical Cyclones &#8211; UPSC Indian Geography Notes"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/edukemy.com\/upsc\/upsc-geography?utm_source=Blog&amp;utm_medium=Banner&amp;utm_campaign=Geography\" target=\"_blank\" rel=\"noreferrer noopener\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1280\" height=\"300\" src=\"https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/14.png\" alt=\"\" class=\"wp-image-42410\" srcset=\"https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/14.png 1280w, https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/14-1170x274.png 1170w, https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/14-585x137.png 585w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/><\/a><\/figure>\n\n\n\n<p>Tropical cyclones, also referred to as low-pressure systems, originate from warm tropical waters. These cyclones form when the sea surface temperature <strong>exceeds 26.5\u00b0C<\/strong>. Typically lasting for days or even weeks, tropical cyclones follow irregular courses. Once a cyclone moves over land or encounters cooler ocean waters, it dissipates.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_73 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-69e0c94a74dda\" class=\"ez-toc-cssicon-toggle-label\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-cssicon\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-69e0c94a74dda\"  \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#CYCLONES\" title=\"CYCLONES\">CYCLONES<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#TROPICAL_CYCLONE\" title=\"TROPICAL CYCLONE\">TROPICAL CYCLONE<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Optimal_conditions_for_the_formation_of_a_tropical_cyclone_include\" title=\"Optimal conditions for the formation of a tropical cyclone include:\">Optimal conditions for the formation of a tropical cyclone include:<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Warm_Sea_Surface_Temperature\" title=\"Warm Sea Surface Temperature:\">Warm Sea Surface Temperature:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Coriolis_Force\" title=\"Coriolis Force:\">Coriolis Force:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Stable_Vertical_Wind_Speed\" title=\"Stable Vertical Wind Speed:\">Stable Vertical Wind Speed:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Low-Pressure_Area_or_Cyclonic_Circulation\" title=\"Low-Pressure Area or Cyclonic Circulation:\">Low-Pressure Area or Cyclonic Circulation:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Higher_Divergence_Above_Sea_Level\" title=\"Higher Divergence Above Sea Level:\">Higher Divergence Above Sea Level:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#DEVELOPMENTAL_STAGE_OF_CYCLONE\" title=\"DEVELOPMENTAL STAGE OF CYCLONE\">DEVELOPMENTAL STAGE OF CYCLONE<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Origin_of_Tropical_Cyclones\" title=\"Origin of Tropical Cyclones:\">Origin of Tropical Cyclones:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Formation_and_Initial_Development_Stage\" title=\"Formation and Initial Development Stage:\">Formation and Initial Development Stage:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Mature_Stage\" title=\"Mature Stage:\">Mature Stage:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Modification_and_Decay\" title=\"Modification and Decay:\">Modification and Decay:<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Structure_of_a_Tropical_Cyclone\" title=\"Structure of a Tropical Cyclone:\">Structure of a Tropical Cyclone:<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#1_Eye\" title=\"1. Eye:\">1. Eye:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#2_Eyewall\" title=\"2. Eyewall:\">2. Eyewall:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#3_Spiral_Bands\" title=\"3. Spiral Bands:\">3. Spiral Bands:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#4_Vertical_Structure\" title=\"4. Vertical Structure:\">4. Vertical Structure:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Favorite_Breeding_Grounds_for_Tropical_Cyclones\" title=\"Favorite Breeding Grounds for Tropical Cyclones:\">Favorite Breeding Grounds for Tropical Cyclones:<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Local_Names_of_Tropical_Cyclones\" title=\"Local Names of Tropical Cyclones:\">Local Names of Tropical Cyclones:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#FAQs_%E2%80%93_Tropical_Cyclones\" title=\"FAQs &#8211; Tropical Cyclones\">FAQs &#8211; Tropical Cyclones<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#1_What_is_a_tropical_cyclone\" title=\"1. What is a tropical cyclone?\">1. What is a tropical cyclone?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#2_How_do_tropical_cyclones_form\" title=\"2. How do tropical cyclones form?\">2. How do tropical cyclones form?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#3_What_are_the_optimal_conditions_for_tropical_cyclone_formation\" title=\"3. What are the optimal conditions for tropical cyclone formation?\">3. What are the optimal conditions for tropical cyclone formation?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#4_How_are_tropical_cyclones_classified\" title=\"4. How are tropical cyclones classified?\">4. How are tropical cyclones classified?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#5_What_is_the_lifecycle_of_a_tropical_cyclone\" title=\"5. What is the lifecycle of a tropical cyclone?\">5. What is the lifecycle of a tropical cyclone?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#In_case_you_still_have_your_doubts_contact_us_on_9811333901\" title=\"In case you still have your doubts, contact us on 9811333901.&nbsp;\">In case you still have your doubts, contact us on 9811333901.&nbsp;<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/edukemy.com\/blog\/tropical-cyclones-upsc-indian-geography-notes\/#Visit_our_YouTube_Channel_%E2%80%93_here\" title=\"Visit our YouTube Channel &#8211;&nbsp;here\">Visit our YouTube Channel &#8211;&nbsp;here<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"CYCLONES\"><\/span><strong>CYCLONES<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\"><li>Cyclones are characterized by a low-pressure system with swift inward air circulation.<\/li><li>In the Northern Hemisphere, the air flows counterclockwise, while in the Southern Hemisphere, it circulates clockwise.&nbsp;<\/li><li>Cyclones are often linked to storms and adverse weather conditions.&nbsp;<\/li><li>The term &#8220;Cyclone&#8221; originates from the Greek word &#8220;Cyclos,&#8221; meaning snake coils.&nbsp;<\/li><li><strong>Henry Paddington<\/strong> coined this term, inspired by the resemblance of tropical storms in the Bay of Bengal and the Arabian Sea to coiled sea serpents.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"TROPICAL_CYCLONE\"><\/span><strong>TROPICAL CYCLONE<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>The term <strong>&#8220;Tropical Cyclone&#8221; <\/strong>is employed by the World Meteorological Organization to denote weather systems with winds exceeding &#8220;Gale Force,&#8221; with a minimum speed of 63 km per hour.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>These cyclones form in the region between the Tropics of Capricorn and Cancer.\u00a0<\/li><li>They are large-scale weather systems originating over tropical or subtropical oceans, characterized by the consolidation of surface wind circulation.<\/li><li>Tropical cyclones are formidable storms that emerge over tropical oceans and subsequently move inland, causing widespread destruction with their violent winds, heavy rainfall, and storm surges.\u00a0<\/li><li>Recognized as one of the world&#8217;s most devastating natural disasters, tropical cyclones undergo formation and intensification over warm tropical oceans.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Optimal_conditions_for_the_formation_of_a_tropical_cyclone_include\"><\/span><strong>Optimal conditions for the formation of a tropical cyclone include:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Warm_Sea_Surface_Temperature\"><\/span><strong>Warm Sea Surface Temperature:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>A substantial expanse of water surface with temperatures exceeding 27\u00b0C is favorable for tropical cyclone formation.&nbsp;<\/li><li>The warm ocean provides the necessary heat and moisture to fuel the storm.<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Coriolis_Force\"><\/span><strong>Coriolis Force:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>The Coriolis force, a result of the Earth&#8217;s rotation, must be sufficiently strong to initiate the development of a cyclonic vortex.&nbsp;<\/li><li>This force imparts the characteristic rotation to the storm system.<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Stable_Vertical_Wind_Speed\"><\/span><strong>Stable Vertical Wind Speed:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Minimal variations in vertical wind speed are essential for the development and consolidation of a tropical cyclone.&nbsp;<\/li><li>Stable atmospheric conditions contribute to the organization of the storm.<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Low-Pressure_Area_or_Cyclonic_Circulation\"><\/span><strong>Low-Pressure Area or Cyclonic Circulation:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>The presence of a weak low-pressure area or a pre-existing low-level cyclonic circulation is a precursor to tropical cyclone formation.&nbsp;<\/li><li>Such conditions provide the initial atmospheric disturbance necessary for cyclone development.<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Higher_Divergence_Above_Sea_Level\"><\/span><strong>Higher Divergence Above Sea Level:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Above the sea-level system, there should be a higher level of divergence.&nbsp;<\/li><li>This divergence supports the upward movement of air, contributing to the intensification of the cyclonic system.<\/li><\/ul>\n\n\n\n<p>These factors collectively create an environment conducive to the initiation and strengthening of tropical cyclones.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DEVELOPMENTAL_STAGE_OF_CYCLONE\"><\/span><strong>DEVELOPMENTAL STAGE OF CYCLONE<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Origin_of_Tropical_Cyclones\"><\/span><strong>Origin of Tropical Cyclones:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Tropical cyclones originate over tropical oceans during late summers, typically from August to mid-November.&nbsp;<\/li><li>The thermal conditions during this period provide the necessary warmth for cyclone formation.&nbsp;<\/li><li>The Coriolis effect, influenced by the Earth&#8217;s rotation, imparts a spinning motion to local convectional currents over these tropical regions.<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Formation_and_Initial_Development_Stage\"><\/span><strong>Formation and Initial Development Stage:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>The critical process in the creation and early development of a cyclonic storm involves the transport of water vapor and heat from the warm ocean to the air above.&nbsp;<\/li><li>This transfer occurs primarily through evaporation from the sea surface.<\/li><li>Convection sets in, leading to the condensation of rising air above the ocean surface.&nbsp;<\/li><li>This process stimulates the formation of large vertical cumulus clouds.<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mature_Stage\"><\/span><strong>Mature Stage:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>As a tropical cyclone intensifies, powerful thunderstorms cause the air to rise, spreading out horizontally at the tropopause level.&nbsp;<\/li><li>The spreading air creates positive pressure at higher elevations, accelerating the downward movement due to convection.<\/li><li>This subsiding air warms up through compression, resulting in the formation of a warm &#8220;Eye,&#8221; which is the low-pressure center of the cyclone.<\/li><li>In the Indian Ocean, a mature tropical cyclone exhibits a concentric pattern of turbulent cumulus thundercloud bands as a prominent physical feature.<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Modification_and_Decay\"><\/span><strong>Modification and Decay:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>The weakening of a tropical cyclone begins when its source of warm, moist air diminishes or is abruptly cut off.&nbsp;<\/li><li>This decline manifests in core low-pressure reduction, loss of internal warmth, and a decrease in speed.<\/li><li>Factors contributing to the modification and decay include landfall or passage over cooler waters, leading to a gradual dissipation of the cyclonic system.<\/li><\/ul>\n\n\n\n<p>Understanding the developmental stages of tropical cyclones provides insights into their lifecycle and the conditions that influence their formation, intensification, and eventual weakening.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Structure_of_a_Tropical_Cyclone\"><\/span><strong>Structure of a Tropical Cyclone:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Eye\"><\/span><strong>1. Eye:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>The &#8220;eye&#8221; is a roughly circular area at the center of a severe tropical cyclone characterized by mild winds and favorable weather conditions.<\/li><li>In the eye, there is minimal to no precipitation, and occasional sightings of blue sky or stars are possible.<\/li><li>It has the lowest surface pressure and the warmest temperatures aloft. The eye&#8217;s temperature can be 10\u00b0C or more warmer than the surrounding environment at a height of 12 km, with only 0-2\u00b0C warmer temperatures near the surface.<\/li><li>Eyes vary in size, ranging from 8 kilometers to over 200 kilometers, with the majority falling between 30 and 60 kilometers in diameter.<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Eyewall\"><\/span><strong>2. Eyewall:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>The &#8220;eyewall&#8221; is a circular ring of deep convection that surrounds the eye and harbors the strongest surface winds in the tropical cyclone.<\/li><li>It consists of numerous moderate to powerful updrafts and downdrafts, contributing to the heated temperatures of the eye.<\/li><li>The eyewall region has the greatest sustained winds, representing the fastest winds in the cyclone.<\/li><li>Sinking air is prevalent in the eye, while the eyewall experiences a net upward flow.<\/li><li>Soundings within the eye typically reveal a low-level moist layer with an inversion above.&nbsp;<\/li><li>Sinking in the eye may not reach the ocean surface but extends to a depth of 1-3 kilometers.<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_Spiral_Bands\"><\/span><strong>3. Spiral Bands:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Eyewall convection plays a role in the formation and maintenance of the eye, and spiral bands are associated features of tropical cyclones.<\/li><li>Spiral bands are long, thin rain bands that face the same direction as the horizontal wind and appear to spiral into the storm&#8217;s core.<\/li><li>These bands contribute to low-level convergence and upper-level divergence, forming a direct circulation pattern.<\/li><li>Convergence at the surface, upward motion through the bands, upper-level divergence, and descending air on both sides create a dynamic circulation pattern.<\/li><li>Adiabatic warming occurs as the air cools, leading to a significant pressure drop across the bands and strengthening tangential winds around the cyclone.<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_Vertical_Structure\"><\/span>4. <strong>Vertical Structure:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" data-src=\"https:\/\/lh7-us.googleusercontent.com\/zZpYkk_hFB7P5wQbuabgaaVBd1UaGknLjykGVZlv8NJeiP1ptEOJ5j9ecVc8s598up0btlqUbFiqF5StKBSI-lpm3osFzK9qcU1C0Acq_Gx9N5mtWgO5k2V4BtyfTqTtc8bsHoe3sZaZxX6Cr8q6Goc\" alt=\"\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" class=\"lazyload\" \/><\/figure><\/div>\n\n\n<ul class=\"wp-block-list\"><li>The vertical structure of a tropical cyclone is divided into three layers:<\/li><li>Inflow Layer (Up to 3 km): Crucial for storm generation.<\/li><li>Cyclonic Storm Layer (3 km to 7 km): Main region for cyclonic activity.<\/li><li>Outflow Layer (Above 7 km): Features anticyclonic air movement, with the highest outflow observed at 12 kilometers and above.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Favorite_Breeding_Grounds_for_Tropical_Cyclones\"><\/span><strong>Favorite Breeding Grounds for Tropical Cyclones:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>1. South-east Caribbean Region:<ul><li>Commonly referred to as hurricanes in this region.<\/li><\/ul><\/li><li>2. Philippines Islands, Eastern China:<ul><li>Known as typhoons when they form in this area.<\/li><\/ul><\/li><li>3. Bay of Bengal and Arabian Sea:<ul><li>Referred to as cyclones in the Bay of Bengal and Arabian Sea.<\/li><\/ul><\/li><li>4. South-east African Coast and Madagascar-Mauritius Islands:<ul><li>Regions around the south-east African coast and Madagascar-Mauritius islands are conducive to cyclone formation.<\/li><\/ul><\/li><li>5. North-west Australia:<ul><li>Favorable for the development of tropical cyclones.<\/li><\/ul><\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Local_Names_of_Tropical_Cyclones\"><\/span><strong>Local Names of Tropical Cyclones:<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>1. Hurricanes:<ul><li>Used to describe tropical cyclones in the Atlantic and Eastern Pacific regions.<\/li><\/ul><\/li><li>2. Typhoons:<ul><li>Refers to tropical cyclones in Southeast Asia.<\/li><\/ul><\/li><li>3. Cyclones:<ul><li>Commonly used term for tropical cyclones in the Indian Ocean and Western Pacific around Australia.<\/li><\/ul><\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"FAQs_%E2%80%93_Tropical_Cyclones\"><\/span><strong>FAQs &#8211; Tropical Cyclones<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_What_is_a_tropical_cyclone\"><\/span>1. What is a tropical cyclone?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>A tropical cyclone is a powerful storm characterized by a low-pressure system with rapid inward air circulation. It originates over warm tropical waters and is known by different names in various regions, such as hurricanes, typhoons, or cyclones.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_How_do_tropical_cyclones_form\"><\/span>2. How do tropical cyclones form?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Tropical cyclones form when the sea surface temperature exceeds 26.5\u00b0C. They develop over warm tropical or subtropical oceans, typically between the Tropics of Capricorn and Cancer. The cyclone follows irregular courses, lasting for days or weeks, and dissipates when moving over land or cooler ocean waters.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_What_are_the_optimal_conditions_for_tropical_cyclone_formation\"><\/span>3. What are the optimal conditions for tropical cyclone formation?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Several factors contribute to the formation of tropical cyclones, including warm sea surface temperatures (above 27\u00b0C), a strong Coriolis force, stable vertical wind speed, the presence of a low-pressure area or cyclonic circulation, and higher divergence above sea level.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"4_How_are_tropical_cyclones_classified\"><\/span>4. How are tropical cyclones classified?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Tropical cyclones are classified by the World Meteorological Organization based on their wind speeds. The categories include Tropical Depression, Tropical Storm, Category 1 (Gale Force), Category 2 (Moderate), Category 3 (High), Category 4 (Very High), and Category 5 (Devastating).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"5_What_is_the_lifecycle_of_a_tropical_cyclone\"><\/span>5. What is the lifecycle of a tropical cyclone?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>The lifecycle of a tropical cyclone involves three stages: Formation and Initial Development, Mature Stage, and Modification and Decay. The cyclone originates over warm tropical oceans, intensifies through convective processes, reaches maturity with a well-defined eye and eyewall, and weakens when its heat and moisture source diminishes.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/edukemy.com\/upsc\/upsc-essay?utm_source=Blog&amp;utm_medium=Banner&amp;utm_campaign=Essay\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" data-src=\"https:\/\/edukemy.com\/blog\/wp-content\/uploads\/2024\/06\/UPSC-Essay-Course-1280\u00d7300-1-3.svg\" alt=\"\" class=\"wp-image-42688 lazyload\" width=\"781\" height=\"182\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" style=\"--smush-placeholder-width: 781px; --smush-placeholder-aspect-ratio: 781\/182;\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"In_case_you_still_have_your_doubts_contact_us_on_9811333901\"><\/span><strong>In case you still have your doubts, contact us on 9811333901.<\/strong>&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>For UPSC Prelims Resources,&nbsp;<a href=\"https:\/\/edukemy.com\/upsc-cse-prelims-resource-centre\" target=\"_blank\" rel=\"noreferrer noopener\">Click here<\/a><\/p>\n\n\n\n<p>For Daily Updates and Study Material:<\/p>\n\n\n\n<p>Join our Telegram Channel &#8211;&nbsp;<a href=\"https:\/\/t.me\/WithEdukemy4IAS\" target=\"_blank\" rel=\"noreferrer noopener\">Edukemy for IAS<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>1. Learn through Videos &#8211;&nbsp;<a href=\"https:\/\/bit.ly\/3vOD8sU\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a><\/li><li>2. Be Exam Ready by Practicing Daily MCQs &#8211;&nbsp;<a href=\"https:\/\/bit.ly\/3Q9z2nF\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a><\/li><li>3. Daily Newsletter &#8211; Get all your Current Affairs Covered &#8211;&nbsp;<a href=\"https:\/\/bit.ly\/3bE2y5J\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a><\/li><li>4. Mains Answer Writing Practice &#8211;&nbsp;<a href=\"https:\/\/bit.ly\/3mZuVxl\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a><\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Visit_our_YouTube_Channel_%E2%80%93_here\"><\/span>Visit our YouTube Channel &#8211;&nbsp;<a href=\"https:\/\/www.youtube.com\/@ShabbirsEduKemyforIAS\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a><span class=\"ez-toc-section-end\"><\/span><\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Tropical cyclones, also referred to as low-pressure systems, originate from warm tropical waters. These cyclones form when the sea surface<\/p>\n","protected":false},"author":17,"featured_media":30005,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_eb_attr":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[261],"tags":[186,1850,213,140],"class_list":["post-30004","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-geography-general-studies","tag-general-studies-1","tag-tropical-cyclones","tag-upsc-notes","tag-upsc_preparation_strategy"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/posts\/30004","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/comments?post=30004"}],"version-history":[{"count":2,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/posts\/30004\/revisions"}],"predecessor-version":[{"id":30019,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/posts\/30004\/revisions\/30019"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/media\/30005"}],"wp:attachment":[{"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/media?parent=30004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/categories?post=30004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/edukemy.com\/blog\/wp-json\/wp\/v2\/tags?post=30004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}