{"id":53376,"date":"2025-07-04T14:05:36","date_gmt":"2025-07-04T08:35:36","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=53376"},"modified":"2025-07-04T15:13:54","modified_gmt":"2025-07-04T09:43:54","slug":"roll-cloud","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/roll-cloud\/","title":{"rendered":"Roll Cloud"},"content":{"rendered":"<h2 style=\"text-align: justify;\"><b>Roll Cloud Latest News<\/b><\/h2>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">A rare roll cloud appeared over Portugal\u2019s coast recently, surprising beachgoers as strong winds hit during an ongoing extreme heatwave.<\/span><\/p>\n<h2 style=\"text-align: justify;\"><b>About Roll Cloud<\/b><\/h2>\n<ul style=\"text-align: justify;\">\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A roll cloud is a <\/span><b>low, horizontal, tube-shaped,<\/b><span style=\"font-weight: 400;\"> and relatively <\/span><b>rare type of arcus cloud.<\/b><span style=\"font-weight: 400;\">\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Roll clouds usually <\/span><b>appear to be &#8220;rolling&#8221; about a horizontal axis.\u00a0<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They <\/span><b>usually appear<\/b><span style=\"font-weight: 400;\"> at an altitude of <\/span><b>2,000 to 7,000 meters, and continue to curl visibly.\u00a0<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">They are more <\/span><b>often seen in areas with complex terrain and changeable weather<\/b><span style=\"font-weight: 400;\">\u2014both in the <\/span><b>mountains and on the coasts of the oceans. F<\/b><span style=\"font-weight: 400;\">or example, in the <\/span><b>Alps, around Japan, Scotland, and northern Australia.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>During severe weather<\/b><span style=\"font-weight: 400;\">, roll clouds can be<\/span><b> confused with funnel clouds,<\/b><span style=\"font-weight: 400;\"> as the roll cloud will <\/span><b>show clear signs of rotation along the horizontal and vertical axes, like a tornado.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Roll clouds are <\/span><b>helpful to meteorologists<\/b><span style=\"font-weight: 400;\"> because their <\/span><b>appearance sometimes heralds bad weather<\/b><span style=\"font-weight: 400;\">\u2014strong winds, thunderstorms, storms, or even tornadoes.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A <\/span><b>sharp, rapid roll of clouds can indicate a storm<\/b><span style=\"font-weight: 400;\"> is about to intensify, while a <\/span><b>smooth movement can mean calmer weather.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Along the edge of a thunderstorm<\/b><span style=\"font-weight: 400;\">, they can <\/span><b>serve as a precursor to more active and serious weather<\/b><span style=\"font-weight: 400;\"> in the immediate future.<\/span><\/li>\n<\/ul>\n<h2 style=\"text-align: justify;\"><b>What is an Arcus Cloud?<\/b><\/h2>\n<ul style=\"text-align: justify;\">\n<li style=\"text-align: justify;\"><span style=\"font-weight: 400;\">An <\/span><b>arcus cloud<\/b><span style=\"font-weight: 400;\"> is a <\/span><b>low, horizontal cloud formation<\/b><span style=\"font-weight: 400;\"> that typically <\/span><b>forms along the leading edge of a thunderstorm outflow or cold front.\u00a0<\/b><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-weight: 400;\">There are <\/span><b>two main types<\/b><span style=\"font-weight: 400;\"> of arcus clouds:<\/span><b> Shelf Cloud and Roll Cloud.<\/b>\n<ul style=\"text-align: justify;\">\n<li style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Roll clouds and shelf clouds are found near the leading edge of thunderstorms and form<\/span><b> when relatively cool air, from the storm\u2019s downdraft, forges ahead into the warm, moist air that\u2019s feeding the storm.\u00a0<\/b><\/li>\n<li style=\"text-align: justify;\"><span style=\"font-weight: 400;\">The <\/span><b>main difference<\/b><span style=\"font-weight: 400;\"> between roll clouds and shelf clouds (both are called arcus clouds) is that a <\/span><b>roll cloud is detached from the parent thunderstorm, <\/b><span style=\"font-weight: 400;\">whereas a <\/span><b>shelf cloud is affixed to the base of a cumulonimbus cloud.<\/b><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><b>Source<\/b><span style=\"font-weight: 400;\">: <\/span><a href=\"https:\/\/indianexpress.com\/article\/trending\/trending-globally\/rare-roll-cloud-appear-over-portugal-beach-leaves-the-internet-in-awe-10101544\/\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\">IE<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A roll cloud is a rare, low, horizontal, tube-shaped arcus cloud that forms along the leading edge of thunderstorm outflows or cold fronts. Read more about Roll Cloud, Altitude Range, Regions, Weather Conditions, News<\/p>\n","protected":false},"author":23,"featured_media":53405,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[21,1340,22,23],"class_list":{"0":"post-53376","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-upsc-prelims-current-affairs","8":"tag-prelims-pointers","9":"tag-roll-cloud","10":"tag-upsc-current-affairs","11":"tag-upsc-prelims-current-affairs","12":"no-featured-image-padding"},"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/53376","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/23"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=53376"}],"version-history":[{"count":0,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/53376\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/53405"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=53376"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=53376"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=53376"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}