{"id":35392,"date":"2020-11-02T08:13:49","date_gmt":"2020-11-02T08:13:49","guid":{"rendered":"https:\/\/blogs.agu.org\/landslideblog\/?p=35392"},"modified":"2020-11-02T08:13:49","modified_gmt":"2020-11-02T08:13:49","slug":"nejapa","status":"publish","type":"post","link":"https:\/\/blogs.agu.org\/landslideblog\/2020\/11\/02\/nejapa\/","title":{"rendered":"Nejapa: a deadly channelised flow in El Salvador"},"content":{"rendered":"<h4>Nejapa: a deadly channelised flow in El Salvador<\/h4>\n<p><a href=\"https:\/\/gatoencerrado.news\/2020\/11\/02\/sobrevivir-a-ciegas-al-deslave-en-nejapa\/\">On 29 October 2020 a deadly landslide struck the municipality of Nejapa<\/a> in the San Salvador department of <a href=\"https:\/\/blogs.agu.org\/landslideblog\/?s=el+salvador&amp;submit.x=0&amp;submit.y=0&amp;mswhere=blog\">El Salvador<\/a>.\u00a0 Whilst initial reports suggested a much higher death toll, the final loss appears to be ten people, one of whom remains missing.<\/p>\n<p>The most telling image of the landslide is this one,<a href=\"https:\/\/twitter.com\/PROCIVILSV\/status\/1322237119876812802\"> tweeted by the <\/a><span class=\"css-901oao css-16my406 r-1qd0xha r-ad9z0x r-bcqeeo r-qvutc0\"><a href=\"https:\/\/twitter.com\/PROCIVILSV\/status\/1322237119876812802\">Protecci\u00f3n Civil de El Salvador<\/a>:<\/span><\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"es\" dir=\"ltr\">La acumulaci\u00f3n de agua en los suelos y la intensa lluvia provocaron el colapso de tierra en la zona de El Picacho en el volc\u00e1n de San Salvador. <a href=\"https:\/\/t.co\/nKqJ4SIp8l\">pic.twitter.com\/nKqJ4SIp8l<\/a><\/p>\n<p>&mdash; Protecci\u00f3n Civil de El Salvador (@PROCIVILSV) <a href=\"https:\/\/twitter.com\/PROCIVILSV\/status\/1322237119876812802?ref_src=twsrc%5Etfw\">October 30, 2020<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>.<\/p>\n<p>The accompanying text translates to:<em> <span class=\"css-901oao css-16my406 r-1qd0xha r-ad9z0x r-bcqeeo r-qvutc0\">The accumulation of water in the soils and the intense rain caused the collapse of the land in the El Picacho area on the San Salvador volcano.<\/span><\/em><\/p>\n<p>In total the landslide appears to have affected about 60 households, traveling for a distance of over 4 km.\u00a0 <a href=\"https:\/\/twitter.com\/PROCIVILSV\/status\/1322175047520423943\"><span class=\"css-901oao css-16my406 r-1qd0xha r-ad9z0x r-bcqeeo r-qvutc0\">Protecci\u00f3n Civil de El Salvador<\/span> has also tweeted some drone footage of the impacts downstream<\/a>:<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"es\" dir=\"ltr\">Aproximadamente 4 kil\u00f3metros fue el recorrido del lodo, rocas, troncos y dem\u00e1s escombros que impactaron a la comunidad Los Angelitos II en Nejapa. <a href=\"https:\/\/t.co\/sJ9nPONNqJ\">pic.twitter.com\/sJ9nPONNqJ<\/a><\/p>\n<p>&mdash; Protecci\u00f3n Civil de El Salvador (@PROCIVILSV) <a href=\"https:\/\/twitter.com\/PROCIVILSV\/status\/1322175047520423943?ref_src=twsrc%5Etfw\">October 30, 2020<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>&nbsp;<\/p>\n<p>The landslide is visible on <a href=\"https:\/\/www.planet.com\/\">Planet Labs<\/a> imagery collected on 31 October 2020.\u00a0 This is a PlanetScope image of the site &#8211; the channelised flow is clear (traveling towards the northeast), although the area impacted has some (atmospheric?) distortion:-<\/p>\n<div id=\"attachment_35399\" style=\"width: 646px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-35399\" class=\"size-full wp-image-35399\" src=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2020\/11\/20_11-El-Salvador-2.jpg\" alt=\"Nejapa landslide\" width=\"636\" height=\"829\" srcset=\"https:\/\/blogs.agu.org\/landslideblog\/files\/2020\/11\/20_11-El-Salvador-2.jpg 636w, https:\/\/blogs.agu.org\/landslideblog\/files\/2020\/11\/20_11-El-Salvador-2-230x300.jpg 230w\" sizes=\"auto, (max-width: 636px) 100vw, 636px\" \/><p id=\"caption-attachment-35399\" class=\"wp-caption-text\"><a href=\"https:\/\/www.planet.com\/\">Planet Labs<\/a> PlanetScope image of the 29 October 2020 Nejapa landslide in El Salvador. Image copyright of <a href=\"https:\/\/www.planet.com\/\">Planet Labs<\/a>, used with permission.<\/p><\/div>\n<p>.<\/p>\n<p>Volcanic soils are highly susceptible to this type of failure, which probably started with a small volume slide, with some entrainment in the channel. The steep slopes and narrow channel meant that the runout was extremely long for a slide of this volume.<\/p>\n<p>.<\/p>\n<h4>Quickslide 1: Flexible barriers at Rest and Be Thankful<\/h4>\n<p>Heavy rainfall at Rest and Be Thankful in Scotland triggered some further failures over the weekend.\u00a0 This tweet suggest that the flexible barriers at the site might have been effective:<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">Material caught in roadside nets as flooding reaches old road detour. <a href=\"https:\/\/twitter.com\/hashtag\/A83?src=hash&amp;ref_src=twsrc%5Etfw\">#A83<\/a> and local diversion remain closed.<\/p>\n<p>Photo: <a href=\"https:\/\/twitter.com\/NWTrunkRoads?ref_src=twsrc%5Etfw\">@NWTrunkRoads<\/a> <\/p>\n<p>More: <a href=\"https:\/\/t.co\/pGs6bwy716\">https:\/\/t.co\/pGs6bwy716<\/a><a href=\"https:\/\/twitter.com\/hashtag\/restandbethankful?src=hash&amp;ref_src=twsrc%5Etfw\">#restandbethankful<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/landslides?src=hash&amp;ref_src=twsrc%5Etfw\">#landslides<\/a> <a href=\"https:\/\/t.co\/eVji5XTR3M\">pic.twitter.com\/eVji5XTR3M<\/a><\/p>\n<p>&mdash; Argyllshire Advertiser (@argyllshiread) <a href=\"https:\/\/twitter.com\/argyllshiread\/status\/1322526258996105216?ref_src=twsrc%5Etfw\">October 31, 2020<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>.<\/p>\n<h4>Quickslide 2: Landslide triggered by Typhoon Goni in the Philippines.<\/h4>\n<p>The likely impact of Typhoon Goni in the Philippines is becoming clear, slowly. <a href=\"https:\/\/www.aljazeera.com\/news\/2020\/11\/1\/super-typhoon-goni-batters-philippines-one-million-evacuated\">At least two of the fatalities, a father and his son, were killed by a mudflow from Mayon Volcano<\/a>.<\/p>\n<p>.<\/p>\n<h4>Reference<\/h4>\n<p>Planet Team (2020). Planet Application Program Interface: In Space for Life on Earth. San Francisco, CA. <a href=\"https:\/\/www.planet.com\/\">https:\/\/www.planet.com\/<\/a><\/p>\n<p>&nbsp;<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Nejapa: a deadly channelised flow in El Salvador on 29 October 2020 killed ten people and displaced 60 families <!-- AddThis Advanced Settings generic via filter on wp_trim_excerpt --><!-- AddThis Share Buttons generic via filter on wp_trim_excerpt --><\/p>\n","protected":false},"author":22,"featured_media":35399,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_members_access_role":[],"_members_access_error":""},"categories":[3,7203],"tags":[371,225,469,959,107],"class_list":["post-35392","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-landslide-report","category-planet-labs","tag-central-america","tag-el-salvador","tag-featured","tag-landslide-report","tag-volcano"],"_links":{"self":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/35392","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/comments?post=35392"}],"version-history":[{"count":0,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/posts\/35392\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media\/35399"}],"wp:attachment":[{"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/media?parent=35392"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/categories?post=35392"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.agu.org\/landslideblog\/wp-json\/wp\/v2\/tags?post=35392"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}