{"id":31316,"date":"2024-10-24T17:42:01","date_gmt":"2024-10-24T12:12:01","guid":{"rendered":"https:\/\/www.nextias.com\/ca\/?p=31316"},"modified":"2024-10-24T17:42:02","modified_gmt":"2024-10-24T12:12:02","slug":"cyclone-dana-to-hit-odisha-and-west-bengal","status":"publish","type":"post","link":"https:\/\/www.nextias.com\/ca\/current-affairs\/24-10-2024\/cyclone-dana-to-hit-odisha-and-west-bengal","title":{"rendered":"Cyclone Dana to Hit Odisha and West Bengal"},"content":{"rendered":"\n<p><strong>Syllabus: GS1\/ Geography<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Context<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>According to the Indian Meteorological Department Cyclone Dana will intensify into a <strong>severe cyclonic storm<\/strong> and make landfall in West Bengal and Odisha coast.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What is a Cyclone?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A cyclone is a large-scale system of air that rotates around the center of a <strong>low-pressure area.\u00a0<\/strong>\n<ul class=\"wp-block-list\">\n<li>It is usually accompanied by violent storms and bad weather.\u00a0<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>A cyclone is characterized by <strong>inward spiraling winds<\/strong> that rotate anticlockwise<strong> <\/strong>in the Northern Hemisphere and clockwise in the Southern Hemisphere.<\/li>\n\n\n\n<li><strong>The National Disaster Management Authority (NDMA)<\/strong> classifies cyclones broadly into two categories: <strong>extratropical cyclones and tropical cyclones.<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What are Extratropical Cyclones?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Extratropical cyclones also known as <strong>mid-latitude cyclones <\/strong>occur outside of the tropics.\u00a0<\/li>\n\n\n\n<li>They have <strong>cold air at their core<\/strong>, and derive their energy from the release of potential energy when cold and warm air masses interact.<\/li>\n\n\n\n<li>Such cyclones always <strong>have one or more fronts<\/strong> \u2014 a weather system that is the boundary between two different types of air masses.\n<ul class=\"wp-block-list\">\n<li>One is represented by warm air and the other by cold air \u2014 connected to them, and can occur over land or ocean.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>What are Tropical Cyclones?<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tropical cyclones are those which develop in the regions between the <strong>Tropics of Capricorn and Cancer.\u00a0<\/strong>\n<ul class=\"wp-block-list\">\n<li>They are the most devastating storms on Earth.\u00a0<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Such cyclones develop when<\/strong> thunderstorm activity starts building close to the center of circulation, and the strongest winds and rain are no longer in a band far from the center.<\/li>\n\n\n\n<li>The core of the storm turns warm, and the <strong>cyclone gets most of its energy from the \u201clatent heat\u201d<\/strong> released when water vapor that has evaporated from warm ocean waters condenses into liquid water, the agency added.\n<ul class=\"wp-block-list\">\n<li>Moreover, warm fronts or cold fronts aren\u2019t associated with tropical cyclones.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Tropical cyclones have <strong>different names depending on their location and strength<\/strong>.\n<ul class=\"wp-block-list\">\n<li><strong>Hurricanes:<\/strong> Caribbean Sea, the Gulf of Mexico, the North Atlantic Ocean, and the eastern and central North Pacific Ocean.\u00a0<\/li>\n\n\n\n<li><strong>Typhoons:<\/strong> In the western North Pacific.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Favorable Conditions for Tropical Cyclones<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Very Large Body of water: <\/strong>It provides a continuous source of water to the storm.<\/li>\n\n\n\n<li><strong>Presence of Coriolis force:<\/strong> It is caused by the Earth&#8217;s rotation, and is responsible for giving the cyclone its characteristic circular motion.\n<ul class=\"wp-block-list\">\n<li>This force deflects the winds, making them spiral towards the low-pressure center of the storm.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Pre-existing low-Pressure circulation:<\/strong> Tropical cyclones are defined by a low-pressure center, commonly referred to as the Eye of the Cyclone.\n<ul class=\"wp-block-list\">\n<li>Surrounding this eye, air converges, rises, and cools, leading to the formation of clouds and heavy rainfall.\u00a0<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Warm Sea temperature:\u00a0 <\/strong>The warm surface water\u00a0 (above 26\u00b0C) heats the air above it, causing the air to rise and form the core of the storm.\u00a0<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>IMD Classification of Cyclones<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>The India Meteorological Department (IMD)<\/strong> classifies cyclones based on the sustained wind speeds associated with them\n<ul class=\"wp-block-list\">\n<li><strong>Cyclonic Storm: <\/strong>62-88 kmph<\/li>\n\n\n\n<li><strong>Severe Cyclonic Storm:<\/strong> 89-117 kmph<\/li>\n\n\n\n<li><strong>Very Severe Cyclonic Storm:<\/strong> 118-167 kmph<\/li>\n\n\n\n<li><strong>Extremely Severe Cyclonic Storm: <\/strong>168-221 kmph<\/li>\n\n\n\n<li><strong>Super Cyclonic Storm: <\/strong>Greater than 222 kmph<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>Source: <\/strong><a href=\"https:\/\/indianexpress.com\/article\/explained\/explained-climate\/cyclone-dana-odisha-west-bengal-types-9634514\/\" target=\"_blank\" rel=\"noopener\"><strong>IE<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>According to the Indian Meteorological Department Cyclone Dana will intensify into a severe cyclonic storm and make landfall in West Bengal and Odisha coast.<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-31316","post","type-post","status-publish","format-standard","hentry","category-current-affairs"],"acf":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/31316","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/comments?post=31316"}],"version-history":[{"count":1,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/31316\/revisions"}],"predecessor-version":[{"id":31317,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/posts\/31316\/revisions\/31317"}],"wp:attachment":[{"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/media?parent=31316"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/categories?post=31316"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.nextias.com\/ca\/wp-json\/wp\/v2\/tags?post=31316"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}