{"id":91617,"date":"2026-05-06T15:55:18","date_gmt":"2026-05-06T15:55:18","guid":{"rendered":"https:\/\/diyhaven858.wasmer.app\/index.php\/massive-alaska-megatsunami-was-second-largest-ever-recorded\/"},"modified":"2026-05-06T15:55:18","modified_gmt":"2026-05-06T15:55:18","slug":"massive-alaska-megatsunami-was-second-largest-ever-recorded","status":"publish","type":"post","link":"https:\/\/diyhaven858.wasmer.app\/index.php\/massive-alaska-megatsunami-was-second-largest-ever-recorded\/","title":{"rendered":"Massive Alaska megatsunami was second largest ever recorded"},"content":{"rendered":"<p> <br \/>\n<\/p>\n<div xmlns:default=\"http:\/\/www.w3.org\/2000\/svg\" data-article-body=\"true\">\n<p class=\"mb-4 text-lg md:leading-8 break-words\">A massive &#8216;megatsunami&#8217; wave created when part of an Alaskan mountain crumbled into the sea is the second tallest ever recorded \u2013 and a reminder of the risks posed by melting glaciers, say scientists.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">Last summer a giant wave swept through a remote fjord in southeast Alaska leaving destruction in its wake.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">The event went largely unreported at the time, but a new scientific analysis shows it was caused by a massive landslide.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">An incredible 64 million cubic metres of rock \u2013 the equivalent of 24 Great Pyramids &#8211; splashed into the water below. The sheer power of that amount of rock plunging into the fjord in under a minute created a gigantic wave almost 500 metres tall.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">Only the time it happened \u2013 in the early hours of the morning \u2013 prevented tourist cruise ships being caught up in the devastation, say the researchers.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">Dr Bretwood Higman, an Alaskan geologist, who saw for himself the damage at Tracy Arm Fjord, said it was &#8220;a close call&#8221;.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">&#8220;We know that there were people that were very nearly in the wrong place,&#8221; he said. &#8216;I&#8217;m quite terrified that we&#8217;re not going to be so lucky in the future.&#8221;<\/p>\n<figure class=\"relative mb-4\">\n<div class=\"relative\"><img alt=\"Map of the US and Canada showing the location of Tracy Arm Fjord in south east Alaska\" loading=\"lazy\" width=\"960\" height=\"1014\" decoding=\"async\" data-nimg=\"1\" class=\"rounded-lg\" style=\"color:transparent\" src=\"https:\/\/s.yimg.com\/ny\/api\/res\/1.2\/bm7rxpSvhr3r_S8ZeeHBMA--\/YXBwaWQ9aGlnaGxhbmRlcjt3PTk2MDtoPTEwMTQ7Y2Y9d2VicA--\/https:\/\/media.zenfs.com\/en\/bbc_us_articles_995\/5cf301c33449138318d9e1a237ebcfdc\"\/><button aria-label=\"View larger image\" class=\"group absolute bottom-0 size-full\" data-ylk=\"elm:expand;itc:1;sec:image-lightbox;slk:lightbox-open;\"><span class=\"absolute bottom-3 right-3 rounded-full bg-primary p-3 opacity-100 shadow-elevation-3 transition-opacity duration-300 group-hover:block group-hover:opacity-100 md:p-[17px] lg:bottom-6 lg:right-6 lg:bg-primary\/90 lg:p-5 lg:opacity-0 lg:shadow-none\"><default:svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\" class=\"flex-none size-4 -scale-x-100 text-primary lg:size-6 [&amp;_path]:fill-current\"><default:path fill=\"currentColor\" d=\"M3.1 3.1V11h1.8V6.314l5.392 5.393 1.415-1.414L6.313 4.9H11V3.1zm17.8 17.8V13h-1.8v4.686l-5.393-5.393-1.415 1.414 5.393 5.393H13v1.8z\"\/><\/default:svg><\/span><\/button><dialog aria-label=\"Modal Dialog\" aria-modal=\"true\" class=\"fixed bottom-0 left-0 right-0 top-0 z-4 size-full max-h-none max-w-none bg-primary hidden\"\/><\/div><figcaption class=\"relative text-sm mt-1 pr-2.5\">\n<p>Tracy Arm in Southeast Alaska is known for its sheer cliffs and icy terrain [BBC]<\/p>\n<\/figcaption><\/figure>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">These huge waves, labelled megatsunamis, happen when a landslide caused by either an earthquake or loose rock hit water below. They are usually localised and dissipate quickly.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">The other type of tsunamis happen in the open ocean and are directly triggered by earthquakes, or occasionally other powerful events such as underwater volcanoes.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">They, like the 2011 Japan tsunami, can travel for thousands of miles, hitting populated areas and causing widespread devastation and loss of life.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">The biggest megatsunami was in the 1950s and was over 500 metres. This latest megatsunami was the second largest.<\/p>\n<figure class=\"relative mb-4\">\n<div class=\"relative\"><img alt=\"Illustrated infographic titled &amp;#x00201c;Tallest tsunamis ever recorded,&amp;#x00201d; showing a towering blue wave compared with landmark heights: The Shard (310 m), Eiffel Tower (330 m), and One World Trade Center (541 m). A ranked list shows the highest tsunamis: Lituya Bay, Alaska (1958) at 524 m; Tracy Arm, Alaska (2025) at 482 m; Dickson Fjord, Greenland (2024) at 200 m; Hunga Tonga eruption (2022) at 90 m; and Tohoku, Japan earthquake (2011) at 40.5 m.\" loading=\"lazy\" width=\"960\" height=\"1258\" decoding=\"async\" data-nimg=\"1\" class=\"rounded-lg\" style=\"color:transparent\" src=\"https:\/\/s.yimg.com\/ny\/api\/res\/1.2\/4TRuuit6uZliOYtiJ0QlPQ--\/YXBwaWQ9aGlnaGxhbmRlcjt3PTk2MDtoPTEyNTg7Y2Y9d2VicA--\/https:\/\/media.zenfs.com\/en\/bbc_us_articles_995\/92779706c9a68ac4f613eaa98dd0c5dd\"\/><button aria-label=\"View larger image\" class=\"group absolute bottom-0 size-full\" data-ylk=\"elm:expand;itc:1;sec:image-lightbox;slk:lightbox-open;\"><span class=\"absolute bottom-3 right-3 rounded-full bg-primary p-3 opacity-100 shadow-elevation-3 transition-opacity duration-300 group-hover:block group-hover:opacity-100 md:p-[17px] lg:bottom-6 lg:right-6 lg:bg-primary\/90 lg:p-5 lg:opacity-0 lg:shadow-none\"><default:svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\" class=\"flex-none size-4 -scale-x-100 text-primary lg:size-6 [&amp;_path]:fill-current\"><default:path fill=\"currentColor\" d=\"M3.1 3.1V11h1.8V6.314l5.392 5.393 1.415-1.414L6.313 4.9H11V3.1zm17.8 17.8V13h-1.8v4.686l-5.393-5.393-1.415 1.414 5.393 5.393H13v1.8z\"\/><\/default:svg><\/span><\/button><dialog aria-label=\"Modal Dialog\" aria-modal=\"true\" class=\"fixed bottom-0 left-0 right-0 top-0 z-4 size-full max-h-none max-w-none bg-primary hidden\"\/><\/div><figcaption class=\"relative text-sm mt-1 pr-2.5\">\n<p>The tsunami at Tracy Arm was beaten only by the Lityua Bay tsunami in 1958, also in Alaska [BBC]<\/p>\n<\/figcaption><\/figure>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">Dr Higman arrived on the scene a few weeks after the tsunami hit at the Tracy Arm Fjord \u2013 a destination popular with cruise ships exploring the natural wonders of Alaska.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">He found broken trees littering the mountainside and hurled into the water, and vast swathes of scarred rock stripped of soil and vegetation.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">Alaska is especially vulnerable to megatsunamis because of its steep mountains, narrow fjords and frequent earthquakes.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">Now new research published in Science suggests glacier melt driven by climate change is making such collapses far worse.<\/p>\n<figure class=\"relative mb-4\">\n<div class=\"relative\"><img alt=\"The image above shows an island covered in green vegetation and trees within a fjord. It is nestled between two mountains. Behind is a huge icy blue glacier. The image below shows the glacier has melted and the island has been stripped of vegetation save one tree.\" loading=\"lazy\" width=\"960\" height=\"1200\" decoding=\"async\" data-nimg=\"1\" class=\"rounded-lg\" style=\"color:transparent\" src=\"https:\/\/s.yimg.com\/ny\/api\/res\/1.2\/W85ESQttuHqjKIt3oVh5Pw--\/YXBwaWQ9aGlnaGxhbmRlcjt3PTk2MDtoPTEyMDA7Y2Y9d2VicA--\/https:\/\/media.zenfs.com\/en\/bbc_us_articles_995\/6b7388034654bbbe26c4ad4572377836\"\/><button aria-label=\"View larger image\" class=\"group absolute bottom-0 size-full\" data-ylk=\"elm:expand;itc:1;sec:image-lightbox;slk:lightbox-open;\"><span class=\"absolute bottom-3 right-3 rounded-full bg-primary p-3 opacity-100 shadow-elevation-3 transition-opacity duration-300 group-hover:block group-hover:opacity-100 md:p-[17px] lg:bottom-6 lg:right-6 lg:bg-primary\/90 lg:p-5 lg:opacity-0 lg:shadow-none\"><default:svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\" class=\"flex-none size-4 -scale-x-100 text-primary lg:size-6 [&amp;_path]:fill-current\"><default:path fill=\"currentColor\" d=\"M3.1 3.1V11h1.8V6.314l5.392 5.393 1.415-1.414L6.313 4.9H11V3.1zm17.8 17.8V13h-1.8v4.686l-5.393-5.393-1.415 1.414 5.393 5.393H13v1.8z\"\/><\/default:svg><\/span><\/button><dialog aria-label=\"Modal Dialog\" aria-modal=\"true\" class=\"fixed bottom-0 left-0 right-0 top-0 z-4 size-full max-h-none max-w-none bg-primary hidden\"\/><\/div><figcaption class=\"relative text-sm mt-1 pr-2.5\">\n<p>[BBC]<\/p>\n<\/figcaption><\/figure>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">The team combined field work, seismic and satellite data to reconstruct a domino chain of events and trace the height of the wave.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">Dr Stephen Hicks of University College London said the glacier was previously &#8220;helping to hold up this piece of rock&#8221;, and so when the ice retreated, it exposed the bottom of the cliff face, &#8220;allowing that rock material to suddenly collapse into the fjord&#8221;.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">He and his colleagues have studied tsunamis for decades and are worried.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">&#8220;More people are now going to remote areas &#8211; often these tourist cruises are going to see the natural beauty of the area to actually learn more about climate change &#8211; but they are also dangerous places to be.&#8221;<\/p>\n<figure class=\"relative mb-4\">\n<div class=\"relative\"><img alt=\"The picture shows a large area of bare earth, rocks and mud with groups of uprooted trees in the background set before a thick forest topped by blue sky.\" loading=\"lazy\" width=\"960\" height=\"540\" decoding=\"async\" data-nimg=\"1\" class=\"rounded-lg\" style=\"color:transparent\" src=\"https:\/\/s.yimg.com\/ny\/api\/res\/1.2\/y5vcsarUiDPRbo44uqwMNw--\/YXBwaWQ9aGlnaGxhbmRlcjt3PTk2MDtoPTU0MDtjZj13ZWJw\/https:\/\/media.zenfs.com\/en\/bbc_us_articles_995\/e38cb4ecd68e7486de9639b3a85c5b21\"\/><button aria-label=\"View larger image\" class=\"group absolute bottom-0 size-full\" data-ylk=\"elm:expand;itc:1;sec:image-lightbox;slk:lightbox-open;\"><span class=\"absolute bottom-3 right-3 rounded-full bg-primary p-3 opacity-100 shadow-elevation-3 transition-opacity duration-300 group-hover:block group-hover:opacity-100 md:p-[17px] lg:bottom-6 lg:right-6 lg:bg-primary\/90 lg:p-5 lg:opacity-0 lg:shadow-none\"><default:svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\" class=\"flex-none size-4 -scale-x-100 text-primary lg:size-6 [&amp;_path]:fill-current\"><default:path fill=\"currentColor\" d=\"M3.1 3.1V11h1.8V6.314l5.392 5.393 1.415-1.414L6.313 4.9H11V3.1zm17.8 17.8V13h-1.8v4.686l-5.393-5.393-1.415 1.414 5.393 5.393H13v1.8z\"\/><\/default:svg><\/span><\/button><dialog aria-label=\"Modal Dialog\" aria-modal=\"true\" class=\"fixed bottom-0 left-0 right-0 top-0 z-4 size-full max-h-none max-w-none bg-primary hidden\"\/><\/div><figcaption class=\"relative text-sm mt-1 pr-2.5\">\n<p>Ground-level view of tsunami damage near the mouth of the fjord showing uprooted trees and vegetation stripped from the shoreline. [Photo by Cyrus Read\/U.S. Geological Survey.]<\/p>\n<\/figcaption><\/figure>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">Dr Higman said there is little doubt that the risks of megatsunamis are increasing.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">&#8220;At this point, I&#8217;m pretty confident that these are increasing not just a little bit, but increasing a lot,&#8221; he said.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">&#8220;Maybe in the order of 10 times as frequent as they were just a few decades ago.&#8221;<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">The scientists are calling for wider monitoring of hazards in parts of Alaska that might be vulnerable to megatsunamis.<\/p>\n<p class=\"mb-4 text-lg md:leading-8 break-words\">Some cruise companies have announced they are to stop sending ships into Tracy Arm amid safety fears.<\/p>\n<\/div>\n<p><br \/>\n<br \/><a ><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A massive &#8216;megatsunami&#8217; wave created when part of an Alaskan mountain crumbled into the sea is the second tallest ever recorded \u2013 and a reminder of the risks posed by melting glaciers, say scientists. Last summer a giant wave swept through a remote fjord in southeast Alaska leaving destruction in its wake. The event went [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":91618,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_daextam_enable_autolinks":"","jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[9],"tags":[],"class_list":["post-91617","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-breaking-news"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/diyhaven858.wasmer.app\/wp-content\/uploads\/2026\/05\/42f179f71e945c006983d669097b4d16.jpeg","jetpack_sharing_enabled":true,"jetpack-related-posts":[],"_links":{"self":[{"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/posts\/91617","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/comments?post=91617"}],"version-history":[{"count":0,"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/posts\/91617\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/media\/91618"}],"wp:attachment":[{"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/media?parent=91617"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/categories?post=91617"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/diyhaven858.wasmer.app\/index.php\/wp-json\/wp\/v2\/tags?post=91617"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}