{"id":2013325,"date":"2026-06-26T11:36:50","date_gmt":"2026-06-26T08:36:50","guid":{"rendered":"https:\/\/analyse.optim.biz\/?p=2013325"},"modified":"2026-06-26T11:36:50","modified_gmt":"2026-06-26T08:36:50","slug":"seismic-doublet-the-phenomenon-that-turned-venezuelas-tragedy-into-catastrophe","status":"publish","type":"post","link":"https:\/\/analyse.optim.biz\/?p=2013325","title":{"rendered":"Seismic doublet: the phenomenon that turned Venezuela&#8217;s tragedy into catastrophe"},"content":{"rendered":"<p>[analyse_image type=&#8221;featured&#8221; src=&#8221;https:\/\/images.euronews.com\/articles\/stories\/09\/81\/46\/31\/1200x675_cmsv2_02bef815-dfd7-5e76-b4af-33646289d60b-9814631.jpg&#8221;]<\/p>\n<article id=\"abe-2905214-pos1-c-latest-stories\" class=\"the-media-object m-modeMobile-1 m-modeDesktop-1 m-modeXL-1\" data-nid=\"2905214\" data-cid=\"9815478\" data-part-label=\"Partner content\">\n<figure id=\"abe-2905214-label-pos1-c-latest-stories\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/51\/16\/189x106_cmsv2_12a5f0c1-f956-53f0-9957-999e7fd9a24b-9815116.jpg\" loading=\"lazy\" alt=\"Workers clear rubble from a collapsed building in Caracas, Venezuela, on Thursday 25 June 2026, a day after the twin earthquakes.\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n                    World News<\/p>\n<div class=\"the-media-object__title  \">\n<p>    920 dead and 3,360 injured: new toll in Venezuela\n  <\/p><\/div>\n<\/div>\n<\/article>\n<article id=\"abe-2905285-pos2-c-latest-stories\" class=\"the-media-object m-modeMobile-1 m-modeDesktop-1 m-modeXL-1\" data-nid=\"2905285\" data-cid=\"9815459\" data-part-label=\"Partner content\">\n<figure id=\"abe-2905285-label-pos2-c-latest-stories\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/54\/50\/189x106_cmsv2_6855d240-444c-51af-87d8-c0511a5bd4b5-9815450.jpg\" loading=\"lazy\" alt=\"Marco Rubio announces Israel-Lebanon framework deal, hailing it as first step toward peace\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n                    Lebanon<\/p>\n<div class=\"the-media-object__title  \"><span class=\"c-article-title__prefix--red\">Breaking news.<\/span><\/p>\n<p>    Rubio announces Israel-Lebanon framework deal as first step\n  <\/p><\/div>\n<\/div>\n<\/article>\n<article id=\"abe-2905196-pos3-c-latest-stories\" class=\"the-media-object m-modeMobile-1 m-modeDesktop-1 m-modeXL-1\" data-nid=\"2905196\" data-cid=\"9815434\" data-part-label=\"Partner content\">\n<figure id=\"abe-2905196-label-pos3-c-latest-stories\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/49\/87\/189x106_cmsv2_4feee668-0990-56f0-93e5-33d7a2fb7ddb-9814987.jpg\" loading=\"lazy\" alt=\"Wild boar spotted on Arr\u00e1bida beaches\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n                    Earth News<\/p>\n<div class=\"the-media-object__title  \">\n<p>    Wild boar stealing food from bathers again on Portuguese beaches\n  <\/p><\/div>\n<\/div>\n<\/article>\n<article id=\"abe-2905276-pos4-c-latest-stories\" class=\"the-media-object m-modeMobile-1 m-modeDesktop-1 m-modeXL-1\" data-nid=\"2905276\" data-cid=\"9815416\" data-part-label=\"Partner content\">\n<figure id=\"abe-2905276-label-pos4-c-latest-stories\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/54\/16\/189x106_cmsv2_ac271a30-bcd1-5bf6-a72f-866df0bb4f0f-9815416.jpg\" loading=\"lazy\" alt=\"AP Photo\/Michael Probst\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n                    Europe News<\/p>\n<div class=\"the-media-object__title  \">\n<p>    Trump threatens 100% tariffs over EU digital tax\n  <\/p><\/div>\n<\/div>\n<\/article>\n<article id=\"abe-2905214-pos1-c-latest-stories-sidebar\" class=\"the-media-object m-modeMobile-2 m-modeDesktop-2 m-modeXL-2\" data-nid=\"2905214\" data-cid=\"9815478\" data-part-label=\"Partner content\">\n<figure id=\"abe-2905214-label-pos1-c-latest-stories-sidebar\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/51\/16\/189x106_cmsv2_12a5f0c1-f956-53f0-9957-999e7fd9a24b-9815116.jpg\" loading=\"lazy\" alt=\"Workers clear rubble from a collapsed building in Caracas, Venezuela, on Thursday 25 June 2026, a day after the twin earthquakes.\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n                    World News<\/p>\n<div class=\"the-media-object__title  \">\n<p>    920 dead and 3,360 injured: new toll in Venezuela\n  <\/p><\/div>\n<\/div>\n<\/article>\n<article id=\"abe-2905285-pos2-c-latest-stories-sidebar\" class=\"the-media-object m-modeMobile-2 m-modeDesktop-2 m-modeXL-2\" data-nid=\"2905285\" data-cid=\"9815459\" data-part-label=\"Partner content\">\n<figure id=\"abe-2905285-label-pos2-c-latest-stories-sidebar\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/54\/50\/189x106_cmsv2_6855d240-444c-51af-87d8-c0511a5bd4b5-9815450.jpg\" loading=\"lazy\" alt=\"Marco Rubio announces Israel-Lebanon framework deal, hailing it as first step toward peace\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n                    Lebanon<\/p>\n<div class=\"the-media-object__title  \"><span class=\"c-article-title__prefix--red\">Breaking news.<\/span><\/p>\n<p>    Rubio announces Israel-Lebanon framework deal as first step\n  <\/p><\/div>\n<\/div>\n<\/article>\n<article id=\"abe-2905196-pos3-c-latest-stories-sidebar\" class=\"the-media-object m-modeMobile-2 m-modeDesktop-2 m-modeXL-2\" data-nid=\"2905196\" data-cid=\"9815434\" data-part-label=\"Partner content\">\n<figure id=\"abe-2905196-label-pos3-c-latest-stories-sidebar\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/49\/87\/189x106_cmsv2_4feee668-0990-56f0-93e5-33d7a2fb7ddb-9814987.jpg\" loading=\"lazy\" alt=\"Wild boar spotted on Arr\u00e1bida beaches\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n                    Earth News<\/p>\n<div class=\"the-media-object__title  \">\n<p>    Wild boar stealing food from bathers again on Portuguese beaches\n  <\/p><\/div>\n<\/div>\n<\/article>\n<article id=\"abe-2905276-pos4-c-latest-stories-sidebar\" class=\"the-media-object m-modeMobile-2 m-modeDesktop-2 m-modeXL-2\" data-nid=\"2905276\" data-cid=\"9815416\" data-part-label=\"Partner content\">\n<figure id=\"abe-2905276-label-pos4-c-latest-stories-sidebar\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/54\/16\/189x106_cmsv2_ac271a30-bcd1-5bf6-a72f-866df0bb4f0f-9815416.jpg\" loading=\"lazy\" alt=\"AP Photo\/Michael Probst\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n                    Europe News<\/p>\n<div class=\"the-media-object__title  \">\n<p>    Trump threatens 100% tariffs over EU digital tax\n  <\/p><\/div>\n<\/div>\n<\/article>\n<article class=\"helper-site-row o-article-newsy\">\n<div class=\"helper-site-container o-article-newsy__container\">\n<div class=\"o-article-newsy__main\">\n<header class=\"h-grid o-article-newsy__main__header\">\n<nav aria-label=\"Breadcrumbs\" class=\"c-article-breadcrumbs\">\n<div id=\"adb-article-breadcrumb\" class=\"c-article-breadcrumbs__list\">\n<p>                          Earth<\/p>\n<p>                          Earth News<\/p><\/div>\n<\/nav>\n<h1 class=\"c-article-redesign-title\">\n                            Seismic doublet: the phenomenon that turned Venezuela&#8217;s tragedy into catastrophe<\/h1>\n<div class=\"c-article-image-video u-position-relative \">\n<div class=\"js-superdiv u-aspect-ratio-16x9 u-position-relative \" data-sponsored=\"Partner content\"><img fetchpriority=\"high\" decoding=\"async\" class=\"js-poster-img c-article-media__img\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/46\/31\/1536x864_cmsv2_02bef815-dfd7-5e76-b4af-33646289d60b-9814631.jpg\" width=\"1536\" height=\"864\" loading=\"eager\" alt=\"Situation after twin earthquakes in Venezuela, 26 June 2026\"><\/div>\n<div class=\"c-article-caption u-position-absolute\"><i id=\"article-caption-content\" class=\"c-article-caption__content\"><span class=\"c-article-caption__text\"><br \/>\n              Situation after the twin earthquakes in Venezuela, 26 June 2026<br \/>\n                    <span class=\"u-color-white\">&#8211;\u00a0<\/span><span class=\"c-article-caption__copyright\">Copyright\u00a0<\/span><span class=\"c-article-caption__credit\">Copyright 2026 The Associated Press. All rights reserved<\/span><\/span><\/i><\/div>\n<div class=\"c-article-image-copyright c-article-image-copyright--novideo\">\n      Copyright\u00a0Copyright 2026 The Associated Press. All rights reserved\n  <\/div>\n<\/div>\n<\/header>\n<div class=\"h-grid o-article-newsy__main__body u-article-content\">\n<div class=\"o-article-newsy__contributors-publication-date\">\n<div class=\"c-article-contributors\">\n  By&amp;nbspJes\u00fas Maturana\n<\/div>\n<div class=\"c-article-publication-date\" data-timestamp=\"1782473810\">\n                    Published on                 <time datetime=\"2026-06-26 13:36:50 +02:00\">26\/06\/2026 &#8211; 13:36 GMT+2<\/time><span class=\"c-article-publication-date__bullet\">\u2022<\/span>Updated<br \/>\n                                     <time datetime=\"13:57\">13:57<\/time><\/div>\n<\/div>\n<div class=\"c-article-share-comment u-align-items-center u-display-flex\"><span class=\"c-article-share-comment__links u-align-items-center u-display-flex u-justify-content-center js-c-article-share-comment-share\"><span class=\"c-article-share-comment__label\">Share<\/span><\/span><span 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class=\"u-display-flex u-gap-1 u-show-for-mobile-only\"><img decoding=\"async\" src=\"https:\/\/static.euronews.com\/website\/images\/vector\/social-icons\/article-redesign-threads.svg\" width=\"24\" height=\"24\" alt=\"threads\" loading=\"lazy\"><span>Threads<\/span><\/span><img decoding=\"async\" src=\"https:\/\/static.euronews.com\/website\/images\/vector\/social-icons\/article-redesign-threads.svg\" width=\"48\" height=\"48\" alt=\"threads\" class=\"u-show-for-desktop\" loading=\"lazy\"><span class=\"u-display-flex u-gap-1 u-show-for-mobile-only\"><img decoding=\"async\" src=\"https:\/\/static.euronews.com\/website\/images\/vector\/social-icons\/article-redesign-whatsapp.svg\" width=\"24\" height=\"24\" alt=\"whatsapp\" loading=\"lazy\"><span>Whatsapp<\/span><\/span><img decoding=\"async\" src=\"https:\/\/static.euronews.com\/website\/images\/vector\/social-icons\/article-redesign-whatsapp.svg\" width=\"48\" height=\"48\" alt=\"whatsapp\" class=\"u-show-for-desktop\" loading=\"lazy\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<h2 class=\"c-article-summary\">\n        On Wednesday 24 June 2026 at 18:04 local time, north-western Venezuela began to shake and, 39 seconds later, a second quake hit, feeding back into the first. But what exactly is a seismic doublet, and why is it so dangerous?<br \/>\n    <\/h2>\n<div class=\"c-article-content c-article-content--earth js-article-content\">\n<p>In seismology, not all earthquakes are the same, and not every sequence of tremors follows the same pattern. As a rule, after a major earthquake there are aftershocks of lower magnitude that gradually decrease over time. But there is a rarer and more unsettling phenomenon: the seismic doublet.<\/p>\n<div>\n<div class=\"c-ad u-show-for-mobile-only\">\n<div class=\"c-ad__placeholder\"><img decoding=\"async\" class=\"c-ad__placeholder__logo\" src=\"https:\/\/static.euronews.com\/website\/images\/logos\/logo-euronews-stacked-outlined-72x72-grey-9.svg\" width=\"72\" height=\"72\" alt loading=\"lazy\"><span>ADVERTISEMENT<\/span><\/div>\n<\/div>\n<div class=\"c-ad u-show-for-desktop\">\n<div class=\"c-ad__placeholder\"><img decoding=\"async\" class=\"c-ad__placeholder__logo\" src=\"https:\/\/static.euronews.com\/website\/images\/logos\/logo-euronews-stacked-outlined-72x72-grey-9.svg\" width=\"72\" height=\"72\" alt loading=\"lazy\"><span>ADVERTISEMENT<\/span><\/div>\n<\/div>\n<\/div>\n<p>As seismologist Luc\u00eda Lozano of Spain&#8217;s National Seismic Network explained, a seismic doublet occurs when &#8220;two earthquakes of very similar magnitude take place, very close together in time and very close together in space&#8221;.<\/p>\n<p>The key lies in that similarity of magnitudes: whereas a conventional aftershock is, under what is known as <strong>B\u00e5th&#8217;s law<\/strong>, roughly 1.2 magnitude units smaller than the main event, in a doublet both quakes <strong>share comparable strength, generally within about 0.4 units on the moment magnitude scale (Mw)<\/strong>. That makes them a sequence of two main earthquakes, rather than one mainshock and its smaller aftershocks.<\/p>\n<p>Technically, these events also display almost identical seismic waveforms, as they originate from the same rupture area and the same stress field. This is what allows scientists to identify them as a pair rather than as independent events.<\/p>\n<div class=\"widget widget--type-image widget--size-fullwidth widget--animation-fade-in widget--align-center\" data-ratio=\"0.6665\">\n<div class=\"widget__wrapper\">\n<div class=\"widget__ratio widget__ratio--auto\">\n<div class=\"widget__contents\">\n<figure class=\"widget__figure\"><img decoding=\"async\" class=\"widgetImage__image\" loading=\"lazy\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/46\/31\/808x539_cmsv2_43e8e96b-85cb-5bd0-8c2b-e87fb2825549-9814631.jpg\" alt=\"Venezuela earthquake, 24 June 2026\"><figcaption class=\"widget__caption\"><span class=\"widget__captionWrap\"><span class=\"widget__captionText\">Venezuela earthquake, 24 June 2026<\/span><span class=\"widget__captionCredit\">Copyright 2026 The Associated Press. All rights reserved<\/span><\/span><\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<h2>What happened in Yaracuy: the figures behind the Venezuelan doublet<\/h2>\n<p>The seismic doublet of 24 June 2026 struck in the Venezuelan state of <strong>Yaracuy<\/strong>, in the north-west of the country, with the two epicentres located near the towns of <strong>San Felipe<\/strong> and <strong>Yumare<\/strong>.<\/p>\n<p>The first of the quakes, considered the <strong>foreshock<\/strong>, was recorded at 22:04:33 UTC (18:04 local time) with a magnitude of <strong>7.2 Mw<\/strong>, an epicentre 24 kilometres east-north-east of San Felipe and a focal depth of 21.9 kilometres. <\/p>\n<p>Just 39 seconds later, at 22:05:12 UTC, came the <strong>main event<\/strong>: a jolt of <strong>7.5 Mw<\/strong>, with its epicentre 23 kilometres south-east of Yumare, on the border between Yaracuy and Carabobo, and at a depth of barely 10 kilometres.<\/p>\n<div class=\"widget widget--type-freeform\nwidget--size-fullwidth\nwidget--align-center\"><\/p>\n<div class=\"widget__wrapper\">\n<div class=\"widget__ratio widget__ratio--auto\">\n<div class=\"widget__contents\">\n        \n      <\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>Both earthquakes reached a maximum intensity of <strong>VIII on the Modified Mercalli scale<\/strong>, classified as &#8220;severe&#8221; to &#8220;severe-extreme&#8221;. According to the technical report by the University of the Andes, they constitute the <strong>largest instrumentally recorded seismic event in Venezuela in the 21st century<\/strong>.<\/p>\n<p>What makes this doublet particularly striking is the very short interval between the shocks. As Brandon Bishop, a seismologist at Saint Louis University, noted: &#8220;Most doublets do not occur with so little time between them.&#8221; <\/p>\n<p>Stephen Hicks, from University College London, even suggested that it might be more accurate to think of the sequence as &#8220;a single earthquake that lasted about 50 seconds&#8221;, in other words, an almost continuous rupture that triggered a progressive catastrophe.<\/p>\n<p>When a fault ruptures and releases energy, it does more than generate an earthquake: it also <strong>alters the stress state on neighbouring faults<\/strong>. If one of them is already close to its breaking point, that change can be enough to unleash a new quake.<\/p>\n<p>This process is known as <strong>Coulomb stress transfer<\/strong> and is, according to experts, the most likely explanation for what happened on 24 June. Harold Tobin, director of the Pacific Northwest Seismic Network at the University of Washington, was unequivocal: &#8220;It is highly likely that the first triggered the second&#8221;.<\/p>\n<h2>The seismometer trap: why the initial magnitude was overestimated<\/h2>\n<p>The fact that the two quakes struck so few seconds apart had a knock-on effect on the measuring instruments themselves: the seismograms of both events <strong>overlapped<\/strong>. <\/p>\n<p>Automated alert systems initially reported a maximum magnitude of <strong>7.8 Mw<\/strong>, a figure that did not correspond to either quake on its own, but to the combined signal of the two superimposed events. A subsequent manual analysis of the seismic records made it possible to clean up the data and determine the true magnitudes of 7.2 and 7.5.<\/p>\n<p>This initial confusion, far from being a trivial technical error, perfectly illustrates the nature of the phenomenon: a seismic doublet is, in a sense, greater than each of its individual components.<\/p>\n<h2>The geology behind the disaster: two plates locked in eternal conflict<\/h2>\n<p>Venezuela is far from immune to earthquakes. Its northern region lies on one of the most active tectonic boundaries in the Americas: the <strong>boundary between the Caribbean plate and the South American plate<\/strong>.<\/p>\n<p>Unlike the famous Pacific Ring of Fire, which concentrates most major South American earthquakes along the west coast, northern Venezuela has an equally intense but less well-known geological dynamic. <\/p>\n<p>In this area, the Caribbean plate is moving eastwards relative to the South American plate at a rate of around 20 millimetres per year, less than a centimetre, an apparently tiny movement which nonetheless builds up colossal stresses over decades and centuries.<\/p>\n<p>This constant friction has created a complex system of active geological faults running across the north of the country. The most important are the <strong>Bocon\u00f3 fault<\/strong>, the <strong>San Sebasti\u00e1n fault<\/strong> and the <strong>El Pilar fault<\/strong>, although in the area affected by the 24 June doublet the <strong>El Guayabo fault<\/strong> and the <strong>Mor\u00f3n fault<\/strong> have also been identified. According to preliminary analyses by the USGS, the 7.5 quake appears to have been closer to the El Guayabo fault, while the 7.2 event seems to have occurred nearer the Mor\u00f3n fault.<\/p>\n<p>Torsten Dahm, head of the Earthquake and Volcano Physics section at the Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, placed these earthquakes among the strongest recorded in that region in roughly a century, although he recalled that the area has a formidable historical record: a magnitude 7.7 quake in 1900, a 6.5 event in Caracas in 1967, and the devastating 1812 earthquake, with an estimated magnitude of up to 8.<\/p>\n<h2>Why the seismic doublet in Venezuela was so destructive<\/h2>\n<p>The Venezuelan seismic doublet brought together several factors that combined to maximise its destructive power:<\/p>\n<ul>\n<li><strong>Shallow depth.<\/strong> The 7.5 quake had its focus at just 10 kilometres deep, and the 7.2 event at less than 22. These were <strong>shallow<\/strong> earthquakes, a technical term in seismology for events whose focus lies above 70 kilometres. The shallower the quake, the greater the intensity with which its waves hit the surface, because they travel a shorter distance and lose less energy. This very limited depth is, according to experts at the University of the Andes, one of the main reasons for the violence with which the shaking was felt.<\/li>\n<li><strong>The cumulative nature of the doublet.<\/strong> A single high-magnitude earthquake already subjects structures to extreme stress. A second one of comparable magnitude, occurring before the vibrations of the first have died away, imposes a <strong>second cycle of seismic loading<\/strong> on buildings that are already compromised. Structures that survived the first blow, albeit with damage, were unable to withstand the second.<\/li>\n<li><strong>The vulnerability of the building stock.<\/strong> In its assessment, the USGS warned that the affected area combines modern buildings with &#8220;unreinforced brick masonry housing&#8221; and &#8220;adobe block structures&#8221;, precisely the types of construction most vulnerable to seismic shaking. Many buildings also had pre-existing weaknesses such as poor confinement, short columns or extensions built without adequate structural design.<\/li>\n<li><strong>Seismic amplification in La Guaira and Caracas.<\/strong> The nature of the ground on which the affected cities stand plays a crucial role. Soft or sedimentary soils amplify seismic waves, increasing the perceived intensity compared with rock. Coastal areas such as La Guaira, with landfill and alluvial soils, are particularly prone to this amplification effect.<\/li>\n<\/ul>\n<div class=\"widget widget--type-euronews\nwidget--size-fullwidth\nwidget--align-center\"><\/p>\n<div class=\"widget__wrapper\">\n<figure class=\"widget__figure\">\n<div class=\"auto widget__ratio widget__ratio--16x9\">\n        \n      <\/div>\n<\/figure>\n<\/div>\n<\/div>\n<h2>The trail of destruction: affected areas and casualty toll<\/h2>\n<p>The consequences of the doublet spread across a broad swathe of Venezuelan territory. The worst damage was concentrated in:<\/p>\n<ul>\n<li><strong>La Guaira state<\/strong>: the hardest hit, with dozens of buildings collapsing along the coastal strip, streets split by fissures that trapped vehicles, and the Sim\u00f3n Bol\u00edvar International Airport with its roof partially collapsed, forcing a temporary closure.<\/li>\n<li><strong>Caracas<\/strong>: building collapses in San Bernardino, the historic centre and the Baruta district; facades torn off and streets covered in rubble. The mayor of the Chacao municipality reported rescuing 18 people from a single building.<\/li>\n<li><strong>Montalb\u00e1n municipality (Carabobo)<\/strong>: described as &#8220;ground zero&#8221; in the academic report by the University of the Andes, with several structures totally destroyed.<\/li>\n<li><strong>San Felipe (Yaracuy)<\/strong>: cracked walls and downed power lines in the city closest to the epicentres.<\/li>\n<li><strong>Aragua state<\/strong>: buildings with collapsed and cracked walls in the Andr\u00e9s Bello housing estate in Maracay.<\/li>\n<\/ul>\n<div class=\"widget widget--type-image widget--size-fullwidth widget--animation-fade-in widget--align-center\" data-ratio=\"0.36\">\n<div class=\"widget__wrapper\">\n<div class=\"widget__ratio widget__ratio--auto\">\n<div class=\"widget__contents\">\n<figure class=\"widget__figure\"><img decoding=\"async\" class=\"widgetImage__image\" loading=\"lazy\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/46\/31\/808x291_cmsv2_d2e3cdd2-38e9-5086-993e-e669f076378e-9814631.jpg\" alt=\"Before and after the seismic doublet in La Guaira\"><figcaption class=\"widget__caption\"><span class=\"widget__captionWrap\"><span class=\"widget__captionText\">Before and after the seismic doublet in La Guaira<\/span><span class=\"widget__captionCredit\">AP<\/span><\/span><\/figcaption><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>The Bolivarian Navy Military Academy (AMARB) was largely destroyed. The Mor\u00f3n road in Carabobo cracked and collapsed. The quake was strongly felt in northern Colombia, including Bogot\u00e1, in northern Brazil and on several Caribbean islands: Aruba, Bonaire and Cura\u00e7ao. <\/p>\n<div class=\"c-widget-related\" data-stories-id data-event=\"widget_related\">\n<div class=\"c-widget-related__title\"><b class=\"c-widget-related__title__text\" lang=\"en\">Related<\/b><\/div>\n<ul class=\"c-widget-related__list\">\n<li class=\"c-widget-related__item\">La Guaira, Venezuela\u2019s port city, shows extensive earthquake damage after the quake<\/li>\n<\/ul>\n<\/div>\n<p>The Pacific Tsunami Warning Center initially issued an alert for Puerto Rico and the US Virgin Islands, which was cancelled a few hours later when it was confirmed that no destructive wave had been generated.<\/p>\n<p>The provisional toll, according to figures from the Venezuelan authorities, stands at more than <strong>235 dead<\/strong>, around <strong>5,000 injured<\/strong> and over <strong>150 missing<\/strong>, with more than 250 buildings affected and 138 aftershocks recorded in the first 24 hours.<\/p>\n<div class=\"widget widget--type-euronews\nwidget--size-fullwidth\nwidget--align-center\"><\/p>\n<div class=\"widget__wrapper\">\n<figure class=\"widget__figure\">\n<div class=\"auto widget__ratio widget__ratio--16x9\">\n        \n      <\/div>\n<\/figure>\n<\/div>\n<\/div>\n<h2>Aftershocks: the danger that does not go away<\/h2>\n<p>The doublet was not the end of the seismic episode but its beginning. The USGS issued aftershock forecasts indicating that the region will be shaken by tremors of magnitude 3 to 5 for weeks. <\/p>\n<p>Within the first month, there is a <strong>24% probability<\/strong> that a magnitude 6 earthquake will hit the area and a <strong>3% probability of another magnitude 7 quake<\/strong>.<\/p>\n<p>The aftershocks will follow a familiar pattern: they will occur more frequently immediately after the main event and will then decline exponentially over days, weeks and even years. <\/p>\n<p>The problem is that structures already weakened by the doublet are far more vulnerable to these secondary blows, turning every aftershock into a real threat for buildings that apparently survived the main event.<\/p>\n<h2>International response and political context<\/h2>\n<div class=\"widget widget--type-euronews\nwidget--size-fullwidth\nwidget--align-center\"><\/p>\n<div class=\"widget__wrapper\">\n<figure class=\"widget__figure\">\n<div class=\"auto widget__ratio widget__ratio--16x9\">\n        \n      <\/div>\n<\/figure>\n<\/div>\n<\/div>\n<p>The disaster struck at a delicate moment for Venezuela. The country is undergoing a political transition following the arrest of former president Nicol\u00e1s Maduro in January 2026, with acting president Delcy Rodr\u00edguez heading a government that has yet to set a date for elections. The catastrophe will be a crucial test for her administration.<\/p>\n<p>The international community responded swiftly. Switzerland announced the deployment of 80 rescuers and 18 tonnes of rescue equipment. Colombia sent its USAR-1 team, made up of 62 specialists and four canine teams, along with 12 tonnes of supplies. The Dominican Republic, Chile and <strong>numerous other Latin American countries also sent humanitarian aid<\/strong> and emergency teams. <\/p>\n<p><strong>Spain<\/strong> has sent an A330 aircraft which has landed in the Venezuelan city of Valencia, around 172 kilometres from Caracas, carrying rescue equipment, 59 troops from the Military Emergency Unit (UME), two engineers and eight canine units.<\/p>\n<p>The US military joined the relief efforts, while the US Treasury Department authorised transactions with Venezuela, previously restricted by sanctions, provided they were related to humanitarian aid, with the authorisation valid until 23 October 2026.<\/p>\n<\/div>\n<div id=\"adb-c-mention-original-translation\" class=\"c-mention-original-translation c-mention-original-translation--earth\">\n<aside>This text was translated with the help of artificial intelligence and originally published in\u00a0Spanish    <\/aside>\n<\/div>\n<p>                          Go to accessibility shortcuts<\/p>\n<div class=\"c-article-share-comment u-align-items-center u-display-flex\"><span class=\"c-article-share-comment__links u-align-items-center u-display-flex u-justify-content-center js-c-article-share-comment-share\"><span class=\"c-article-share-comment__label\">Share<\/span><\/span><span class=\"c-article-share-comment__label\">Comments<\/span><span class=\"c-article-share-comment__label c-article-share-comment__label--always\">Add Euronews on Google<\/span><\/div>\n<div id=\"adb-article-you-might-also-like\" class=\"perf-cv-auto c-article-you-might-also-like\">\n<h2 class=\"c-article-you-might-also-like__title\">\n        Read more<br \/>\n      <\/h2>\n<div class=\"c-article-you-might-also-like__container\">\n<article id=\"abe-2905033-pos0-c-article-you-might-also-like__item\" class=\"the-media-object m-modeMobile-1 m-modeDesktop-1 m-modeXL-1 the-media-object--has-video\" data-nid=\"2905033\" data-cid=\"9814162\" data-part-label=\"Partner content\">\n<figure 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c-ad-halfpage u-show-for-desktop\">\n<div class=\"c-ad__placeholder\"><img loading=\"lazy\" decoding=\"async\" class=\"c-ad__placeholder__logo\" src=\"https:\/\/static.euronews.com\/website\/images\/logos\/logo-euronews-stacked-outlined-72x72-grey-9.svg\" width=\"72\" height=\"72\" alt><span>ADVERTISEMENT<\/span><\/div>\n<\/div>\n<div class=\"c-ad u-show-for-mobile-only\">\n<div class=\"c-ad__placeholder\"><img loading=\"lazy\" decoding=\"async\" class=\"c-ad__placeholder__logo\" src=\"https:\/\/static.euronews.com\/website\/images\/logos\/logo-euronews-stacked-outlined-72x72-grey-9.svg\" width=\"72\" height=\"72\" alt><span>ADVERTISEMENT<\/span><\/div>\n<\/div>\n<\/div>\n<\/aside>\n<\/div>\n<\/article>\n<article id=\"abe-2905033-pos0-c-article-you-might-also-like__item\" class=\"the-media-object m-modeMobile-1 m-modeDesktop-1 m-modeXL-1 the-media-object--has-video\" data-nid=\"2905033\" data-cid=\"9814162\" data-part-label=\"Partner content\">\n<figure id=\"abe-2905033-label-pos0-c-article-you-might-also-like__item\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/41\/62\/480x270_cmsv2_7df49446-6119-5db2-93fc-15b853fe3725-9814162.jpg\" loading=\"lazy\" alt=\"Residents walk among the rubble of building damaged in earthquakes the previous day in Catia La Mar, Venezuela, Thursday, June 25, 2026\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n                    Venezuela<\/p>\n<h3 class=\"the-media-object__title  \">\n<p>    Death toll from quakes rises to 589 in Venezuela&#8217;s La Guaira region<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<article id=\"abe-2905196-pos1-c-article-you-might-also-like__item\" class=\"the-media-object m-modeMobile-1 m-modeDesktop-1 m-modeXL-1\" data-nid=\"2905196\" data-cid=\"9815434\" data-part-label=\"Partner content\">\n<figure id=\"abe-2905196-label-pos1-c-article-you-might-also-like__item\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/49\/87\/480x270_cmsv2_4feee668-0990-56f0-93e5-33d7a2fb7ddb-9814987.jpg\" loading=\"lazy\" alt=\"Wild boar spotted on Arr\u00e1bida beaches\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n                    Earth News<\/p>\n<h3 class=\"the-media-object__title  \">\n<p>    Wild boar stealing food from bathers again on Portuguese beaches<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<article id=\"abe-2905229-pos2-c-article-you-might-also-like__item\" class=\"the-media-object m-modeMobile-1 m-modeDesktop-1 m-modeXL-1\" data-nid=\"2905229\" data-cid=\"9815283\" data-part-label=\"Partner content\">\n<figure id=\"abe-2905229-label-pos2-c-article-you-might-also-like__item\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/52\/29\/480x270_cmsv2_f9ce4433-9383-5820-937a-ca8b15b51395-9815229.jpg\" loading=\"lazy\" alt=\"A pharmacy sign shows a temperature of 41\u00b0C (105.8\u00b0F) in Bordeaux, in south-western France, on Tuesday 23 June 2026.\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n                    Earth News<\/p>\n<h3 class=\"the-media-object__title  \">\n<p>    France: baby dies of heat, fourth child death this week<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<article id=\"abe-2904947-pos2-top-stories\" class=\"the-media-object m-modeMobile-2 m-modeDesktop-2 m-modeXL-2 the-media-object--no-label\" data-nid=\"2904947\" data-cid=\"9813876\" data-part-label=\"Partner content\">\n<figure id=\"abe-2904947-label-pos2-top-stories\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/76\/42\/88\/320x180_cmsv2_38df4cb0-d578-530a-8861-31c8088b5a53-9764288.jpg\" loading=\"lazy\" alt=\"FILE - A sign for the French company TotalEnergies is displayed at headquarters March 21, 2025, in La Defense business district outside of Paris. \" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n<h3 class=\"the-media-object__title  \">\n<p>    Paris court orders TotalEnergies to account for customers&#8217; emissions<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<article id=\"abe-2904838-pos3-top-stories\" class=\"the-media-object m-modeMobile-2 m-modeDesktop-2 m-modeXL-2 the-media-object--no-label\" data-nid=\"2904838\" data-cid=\"9813209\" data-part-label=\"Partner content\">\n<figure id=\"abe-2904838-label-pos3-top-stories\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/32\/09\/320x180_cmsv2_3f80dce5-b48b-5d57-a5b4-b457e0c0d158-9813209.jpg\" loading=\"lazy\" alt=\"A boy cools off in a fountain at the city centre of Budapest, Hungary, during a heatwave with 35 degrees Celsius on Saturday, Aug. 26, 2023.\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n<h3 class=\"the-media-object__title  \">\n<p>    Europe\u2019s heatwave is moving east \u2013 but these countries aren\u2019t prepared<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<article id=\"abe-2904923-pos4-top-stories\" class=\"the-media-object m-modeMobile-2 m-modeDesktop-2 m-modeXL-2 the-media-object--has-video the-media-object--no-label\" data-nid=\"2904923\" data-cid=\"9813617\" data-part-label=\"Partner content\">\n<figure id=\"abe-2904923-label-pos4-top-stories\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/36\/17\/320x180_cmsv2_af489101-e6b9-57a0-b1cf-d6fb2030f916-9813617.jpg\" loading=\"lazy\" alt=\"A worker drinks water on a construction site during high temperatures in Boulogne Billancourt, outside Paris, Wednesday, June 24, 2026. \" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n<h3 class=\"the-media-object__title  \">\n<p>    Europe\u2019s heatwave \u2018virtually impossible\u2019 50 years ago &#8211; analysis<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<article id=\"abe-2904935-pos5-top-stories\" class=\"the-media-object m-modeMobile-2 m-modeDesktop-2 m-modeXL-2 the-media-object--has-video the-media-object--no-label\" data-nid=\"2904935\" data-cid=\"9813678\" data-part-label=\"Partner content\">\n<figure id=\"abe-2904935-label-pos5-top-stories\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/36\/78\/320x180_cmsv2_616f4cde-76fc-5f86-ab3b-e2fc27de1b49-9813678.jpg\" loading=\"lazy\" alt=\"People rest in the Parc des Buttes Chaumont in Paris, Saturday, Aug. 16, 2025\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n<h3 class=\"the-media-object__title  \">\n<p>    Parisians sleep in parks to cool down during heatwave<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<article id=\"abe-2904865-pos6-top-stories\" class=\"the-media-object m-modeMobile-2 m-modeDesktop-2 m-modeXL-2 the-media-object--has-video the-media-object--no-label\" data-nid=\"2904865\" data-cid=\"9813310\" data-part-label=\"Partner content\">\n<figure id=\"abe-2904865-label-pos6-top-stories\" class=\"the-media-object__figure\"><img decoding=\"async\" class=\"the-media-object__image\" src=\"https:\/\/images.euronews.com\/articles\/stories\/09\/81\/31\/34\/320x180_cmsv2_4926f348-c9d8-5c36-a095-2adcd0a064e8-9813134.jpg\" loading=\"lazy\" alt=\"Amelie Kenney, right, and her partner Francesca Pilia stand on the balcony of the attic apartment they shares in Paris, Tuesday, June 23, 2026.\" height=\"9\" width=\"16\"><\/figure>\n<div class=\"the-media-object__content\">\n<h3 class=\"the-media-object__title  \">\n<p>    Paris&#8217; zinc rooftops are a deadly heat trap for residents<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<article id=\"abe-2900867-pos1-mostViewed\" class=\"the-media-object m-modeMobile-3 m-modeDesktop-3 m-modeXL-3 the-media-object--has-video the-media-object--has-related the-media-object--no-label\" data-nid=\"2900867\" data-cid=\"9804724\" data-part-label=\"Partner content\">\n<div class=\"the-media-object__content\">\n<h3 class=\"the-media-object__title  \">\n<p>    &#8216;Flesh-rotting&#8217; bacteria could spread on Europe&#8217;s beaches as seas warm<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<article id=\"abe-2904938-pos2-mostViewed\" class=\"the-media-object m-modeMobile-3 m-modeDesktop-3 m-modeXL-3 the-media-object--has-related the-media-object--no-label\" data-nid=\"2904938\" data-cid=\"9813693\" data-part-label=\"Partner content\">\n<div class=\"the-media-object__content\">\n<h3 class=\"the-media-object__title  \">\n<p>    France takes nuclear reactors offline amid record heatwave<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<article id=\"abe-2904838-pos3-mostViewed\" class=\"the-media-object m-modeMobile-3 m-modeDesktop-3 m-modeXL-3 the-media-object--has-related the-media-object--no-label\" data-nid=\"2904838\" data-cid=\"9813209\" data-part-label=\"Partner content\">\n<div class=\"the-media-object__content\">\n<h3 class=\"the-media-object__title  \">\n<p>    Europe\u2019s heatwave is moving east \u2013 but these countries aren\u2019t prepared<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<article id=\"abe-2904880-pos4-mostViewed\" class=\"the-media-object m-modeMobile-3 m-modeDesktop-3 m-modeXL-3 the-media-object--no-label\" data-nid=\"2904880\" data-cid=\"9813790\" data-part-label=\"Partner content\">\n<div class=\"the-media-object__content\">\n<h3 class=\"the-media-object__title  \">\n<p>    French heatwave: three-year-old found dead in car<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<article id=\"abe-2904315-pos5-mostViewed\" class=\"the-media-object m-modeMobile-3 m-modeDesktop-3 m-modeXL-3 the-media-object--has-video the-media-object--no-label\" data-nid=\"2904315\" data-cid=\"9810376\" data-part-label=\"Partner content\">\n<div class=\"the-media-object__content\">\n<h3 class=\"the-media-object__title  \">\n<p>    More than 150 shipwrecks discovered beneath Gibraltar waters<br \/>\n  <\/h3>\n<\/div>\n<\/article>\n<div class=\"articleBody\" data-key=\"articleBody\">In seismology, not all earthquakes are the same, and not every sequence of tremors follows the same pattern. As a rule, after a major earthquake there are aftershocks of lower magnitude that gradually decrease over time. But there is a rarer and more unsettling phenomenon: the seismic doublet.As seismologist Luc\u00eda Lozano of Spain&#8217;s National Seismic Network explained, a seismic doublet occurs when &#8220;two earthquakes of very similar magnitude take place, very close together in time and very close together in space&#8221;.The key lies in that similarity of magnitudes: whereas a conventional aftershock is, under what is known as B\u00e5th&#8217;s law, roughly 1.2 magnitude units smaller than the main event, in a doublet both quakes share comparable strength, generally within about 0.4 units on the moment magnitude scale (Mw). That makes them a sequence of two main earthquakes, rather than one mainshock and its smaller aftershocks.Technically, these events also display almost identical seismic waveforms, as they originate from the same rupture area and the same stress field. This is what allows scientists to identify them as a pair rather than as independent events.What happened in Yaracuy: the figures behind the Venezuelan doubletThe seismic doublet of 24 June 2026 struck in the Venezuelan state of Yaracuy, in the north-west of the country, with the two epicentres located near the towns of San Felipe and Yumare.The first of the quakes, considered the foreshock, was recorded at 22:04:33 UTC (18:04 local time) with a magnitude of 7.2 Mw, an epicentre 24 kilometres east-north-east of San Felipe and a focal depth of 21.9 kilometres.Just 39 seconds later, at 22:05:12 UTC, came the main event: a jolt of 7.5 Mw, with its epicentre 23 kilometres south-east of Yumare, on the border between Yaracuy and Carabobo, and at a depth of barely 10 kilometres.Both earthquakes reached a maximum intensity of VIII on the Modified Mercalli scale, classified as &#8220;severe&#8221; to &#8220;severe-extreme&#8221;. According to the technical report by the University of the Andes, they constitute the largest instrumentally recorded seismic event in Venezuela in the 21st century.What makes this doublet particularly striking is the very short interval between the shocks. As Brandon Bishop, a seismologist at Saint Louis University, noted: &#8220;Most doublets do not occur with so little time between them.&#8221;Stephen Hicks, from University College London, even suggested that it might be more accurate to think of the sequence as &#8220;a single earthquake that lasted about 50 seconds&#8221;, in other words, an almost continuous rupture that triggered a progressive catastrophe.When a fault ruptures and releases energy, it does more than generate an earthquake: it also alters the stress state on neighbouring faults. If one of them is already close to its breaking point, that change can be enough to unleash a new quake.This process is known as Coulomb stress transfer and is, according to experts, the most likely explanation for what happened on 24 June. Harold Tobin, director of the Pacific Northwest Seismic Network at the University of Washington, was unequivocal: &#8220;It is highly likely that the first triggered the second&#8221;.The seismometer trap: why the initial magnitude was overestimatedThe fact that the two quakes struck so few seconds apart had a knock-on effect on the measuring instruments themselves: the seismograms of both events overlapped.Automated alert systems initially reported a maximum magnitude of 7.8 Mw, a figure that did not correspond to either quake on its own, but to the combined signal of the two superimposed events. A subsequent manual analysis of the seismic records made it possible to clean up the data and determine the true magnitudes of 7.2 and 7.5.This initial confusion, far from being a trivial technical error, perfectly illustrates the nature of the phenomenon: a seismic doublet is, in a sense, greater than each of its individual components.The geology behind the disaster: two plates locked in eternal conflictVenezuela is far from immune to earthquakes. Its northern region lies on one of the most active tectonic boundaries in the Americas: the boundary between the Caribbean plate and the South American plate.Unlike the famous Pacific Ring of Fire, which concentrates most major South American earthquakes along the west coast, northern Venezuela has an equally intense but less well-known geological dynamic.In this area, the Caribbean plate is moving eastwards relative to the South American plate at a rate of around 20 millimetres per year, less than a centimetre, an apparently tiny movement which nonetheless builds up colossal stresses over decades and centuries.This constant friction has created a complex system of active geological faults running across the north of the country. The most important are the Bocon\u00f3 fault, the San Sebasti\u00e1n fault and the El Pilar fault, although in the area affected by the 24 June doublet the El Guayabo fault and the Mor\u00f3n fault have also been identified. According to preliminary analyses by the USGS, the 7.5 quake appears to have been closer to the El Guayabo fault, while the 7.2 event seems to have occurred nearer the Mor\u00f3n fault.Torsten Dahm, head of the Earthquake and Volcano Physics section at the Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, placed these earthquakes among the strongest recorded in that region in roughly a century, although he recalled that the area has a formidable historical record: a magnitude 7.7 quake in 1900, a 6.5 event in Caracas in 1967, and the devastating 1812 earthquake, with an estimated magnitude of up to 8.Why the seismic doublet in Venezuela was so destructiveThe Venezuelan seismic doublet brought together several factors that combined to maximise its destructive power:Shallow depth. The 7.5 quake had its focus at just 10 kilometres deep, and the 7.2 event at less than 22. These were shallow earthquakes, a technical term in seismology for events whose focus lies above 70 kilometres. The shallower the quake, the greater the intensity with which its waves hit the surface, because they travel a shorter distance and lose less energy. This very limited depth is, according to experts at the University of the Andes, one of the main reasons for the violence with which the shaking was felt.The cumulative nature of the doublet. A single high-magnitude earthquake already subjects structures to extreme stress. A second one of comparable magnitude, occurring before the vibrations of the first have died away, imposes a second cycle of seismic loading on buildings that are already compromised. Structures that survived the first blow, albeit with damage, were unable to withstand the second.The vulnerability of the building stock. In its assessment, the USGS warned that the affected area combines modern buildings with &#8220;unreinforced brick masonry housing&#8221; and &#8220;adobe block structures&#8221;, precisely the types of construction most vulnerable to seismic shaking. Many buildings also had pre-existing weaknesses such as poor confinement, short columns or extensions built without adequate structural design.Seismic amplification in La Guaira and Caracas. The nature of the ground on which the affected cities stand plays a crucial role. Soft or sedimentary soils amplify seismic waves, increasing the perceived intensity compared with rock. Coastal areas such as La Guaira, with landfill and alluvial soils, are particularly prone to this amplification effect.The trail of destruction: affected areas and casualty tollThe consequences of the doublet spread across a broad swathe of Venezuelan territory. The worst damage was concentrated in:La Guaira state: the hardest hit, with dozens of buildings collapsing along the coastal strip, streets split by fissures that trapped vehicles, and the Sim\u00f3n Bol\u00edvar International Airport with its roof partially collapsed, forcing a temporary closure.Caracas: building collapses in San Bernardino, the historic centre and the Baruta district; facades torn off and streets covered in rubble. The mayor of the Chacao municipality reported rescuing 18 people from a single building.Montalb\u00e1n municipality (Carabobo): described as &#8220;ground zero&#8221; in the academic report by the University of the Andes, with several structures totally destroyed.San Felipe (Yaracuy): cracked walls and downed power lines in the city closest to the epicentres.Aragua state: buildings with collapsed and cracked walls in the Andr\u00e9s Bello housing estate in Maracay.The Bolivarian Navy Military Academy (AMARB) was largely destroyed. The Mor\u00f3n road in Carabobo cracked and collapsed. The quake was strongly felt in northern Colombia, including Bogot\u00e1, in northern Brazil and on several Caribbean islands: Aruba, Bonaire and Cura\u00e7ao.The Pacific Tsunami Warning Center initially issued an alert for Puerto Rico and the US Virgin Islands, which was cancelled a few hours later when it was confirmed that no destructive wave had been generated.The provisional toll, according to figures from the Venezuelan authorities, stands at more than 235 dead, around 5,000 injured and over 150 missing, with more than 250 buildings affected and 138 aftershocks recorded in the first 24 hours.Aftershocks: the danger that does not go awayThe doublet was not the end of the seismic episode but its beginning. The USGS issued aftershock forecasts indicating that the region will be shaken by tremors of magnitude 3 to 5 for weeks.Within the first month, there is a 24% probability that a magnitude 6 earthquake will hit the area and a 3% probability of another magnitude 7 quake.The aftershocks will follow a familiar pattern: they will occur more frequently immediately after the main event and will then decline exponentially over days, weeks and even years.The problem is that structures already weakened by the doublet are far more vulnerable to these secondary blows, turning every aftershock into a real threat for buildings that apparently survived the main event.International response and political contextThe disaster struck at a delicate moment for Venezuela. The country is undergoing a political transition following the arrest of former president Nicol\u00e1s Maduro in January 2026, with acting president Delcy Rodr\u00edguez heading a government that has yet to set a date for elections. The catastrophe will be a crucial test for her administration.The international community responded swiftly. Switzerland announced the deployment of 80 rescuers and 18 tonnes of rescue equipment. Colombia sent its USAR-1 team, made up of 62 specialists and four canine teams, along with 12 tonnes of supplies. The Dominican Republic, Chile and numerous other Latin American countries also sent humanitarian aid and emergency teams.Spain has sent an A330 aircraft which has landed in the Venezuelan city of Valencia, around 172 kilometres from Caracas, carrying rescue equipment, 59 troops from the Military Emergency Unit (UME), two engineers and eight canine units.The US military joined the relief efforts, while the US Treasury Department authorised transactions with Venezuela, previously restricted by sanctions, provided they were related to humanitarian aid, with the authorisation valid until 23 October 2026.<\/div>\n<p>[analyse_source url=&#8221;https:\/\/www.euronews.com\/2026\/06\/26\/seismic-doublet-the-phenomenon-that-turned-venezuelas-tragedy-into-catastrophe&#8221;]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[analyse_image type=&#8221;featured&#8221; src=&#8221;https:\/\/images.euronews.com\/articles\/stories\/09\/81\/46\/31\/1200x675_cmsv2_02bef815-dfd7-5e76-b4af-33646289d60b-9814631.jpg&#8221;] World News 920 dead and 3,360 injured: new toll in Venezuela Lebanon Breaking news. Rubio announces Israel-Lebanon framework deal as first step Earth News Wild boar stealing food from bathers again on Portuguese beaches Europe News Trump threatens 100% tariffs over EU digital tax World News 920 dead and 3,360 injured: new [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[90],"tags":[226,36],"class_list":["post-2013325","post","type-post","status-publish","format-standard","hentry","category-international","tag-crawlmanager","tag-euronews-com"],"_links":{"self":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts\/2013325","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2013325"}],"version-history":[{"count":0,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=\/wp\/v2\/posts\/2013325\/revisions"}],"wp:attachment":[{"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2013325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2013325"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/analyse.optim.biz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2013325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}