{"id":155,"date":"2026-05-07T08:48:14","date_gmt":"2026-05-07T08:48:14","guid":{"rendered":"https:\/\/online-news.uk\/?p=155"},"modified":"2026-05-07T08:48:14","modified_gmt":"2026-05-07T08:48:14","slug":"alaskan-megatsunami-bigger-than-empire-state-building-triggered-by-climate-change","status":"publish","type":"post","link":"https:\/\/online-news.uk\/index.php\/2026\/05\/07\/alaskan-megatsunami-bigger-than-empire-state-building-triggered-by-climate-change\/","title":{"rendered":"Alaskan megatsunami bigger than Empire State Building triggered by climate change"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">The wave hit tourist spot the Tracy Arm Fjord at 5.30am, so no boats were in the area. Next time &#8220;we may not be so lucky&#8221;, an expert warns.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/online-news.uk\/wp-content\/uploads\/2026\/05\/skynews-tracy-arm-fjord-alaska_7240682-1024x576.jpg\" alt=\"\" class=\"wp-image-156\" srcset=\"https:\/\/online-news.uk\/wp-content\/uploads\/2026\/05\/skynews-tracy-arm-fjord-alaska_7240682-1024x576.jpg 1024w, https:\/\/online-news.uk\/wp-content\/uploads\/2026\/05\/skynews-tracy-arm-fjord-alaska_7240682-300x169.jpg 300w, https:\/\/online-news.uk\/wp-content\/uploads\/2026\/05\/skynews-tracy-arm-fjord-alaska_7240682-768x432.jpg 768w, https:\/\/online-news.uk\/wp-content\/uploads\/2026\/05\/skynews-tracy-arm-fjord-alaska_7240682-1536x864.jpg 1536w, https:\/\/online-news.uk\/wp-content\/uploads\/2026\/05\/skynews-tracy-arm-fjord-alaska_7240682.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A tsunami at a popular tourist spot in Alaska was the second highest ever recorded and it was &#8220;unbelievably lucky&#8221; no one was hurt, researchers have said.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The wave at the Tracy Arm Fjord in the Tongass National Forest was triggered by a rock landslide which was driven by&nbsp;<a href=\"https:\/\/news.sky.com\/topic\/climate-change-6161\/1\"><strong>climate change<\/strong><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Only the timing of the event, 5.30am on 10 August last year, meant no cruise ships or boats were in the area when the tsunami happened &#8211; but experts fear next time &#8220;we may not be so lucky&#8221;.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Scientists said the wave was up to 1,578ft (481m) tall, making it far bigger than The Shard in London and comfortably higher than New York City&#8217;s Empire State Building.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It was so powerful it violently stripped away vegetation and left behind scarring on the steep rock walls.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Climate change meant the glacier supporting the mountain had retreated amid warming temperatures, eventually leaving the rock unsupported and triggering a landslide.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Such huge waves &#8211; triggered by landslides, volcanic eruptions or meteors; rather than earthquakes &#8211; are sometimes termed as megatsunamis.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">University of Calgary geomorphologist Dan Shugar, lead author of the study published in the journal Science, said: &#8220;The fact that the landslide occurred this early in the morning was unbelievably lucky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8220;Next time &#8211; and there will be a next time &#8211; we may not be so lucky.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&#8220;The stripped vegetation is basically a very sharp line, below which there is only rock and sediment and some tree stumps, and above which is virgin forest, standing as it did on 9 August before the tsunami. Like two different worlds.&#8221;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">There were no photographs or footage of the tsunami, so the scientists reconstructed the events using aerial photos taken after, alongside other data.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The researchers determined the tsunami&#8217;s height by measuring where the stripping of vegetation had occurred.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The wave hit tourist spot the Tracy Arm Fjord at 5.30am, so no boats were in the area. Next time &#8220;we may not be so lucky&#8221;, an expert warns. A&hellip;<\/p>\n","protected":false},"author":1,"featured_media":156,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53,20],"tags":[],"class_list":["post-155","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climate-change","category-sky-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Alaskan megatsunami bigger than Empire State Building triggered by climate change - online-news.uk<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/online-news.uk\/index.php\/2026\/05\/07\/alaskan-megatsunami-bigger-than-empire-state-building-triggered-by-climate-change\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Alaskan megatsunami bigger than Empire State Building triggered by climate change - online-news.uk\" \/>\n<meta property=\"og:description\" content=\"The wave hit tourist spot the Tracy Arm Fjord at 5.30am, so no boats were in the area. 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