{"id":354714,"date":"2026-03-30T05:29:10","date_gmt":"2026-03-30T05:29:10","guid":{"rendered":"https:\/\/www.newsbeep.com\/nz\/354714\/"},"modified":"2026-03-30T05:29:10","modified_gmt":"2026-03-30T05:29:10","slug":"tsunami-warnings-may-not-have-time-to-trigger","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/nz\/354714\/","title":{"rendered":"Tsunami warnings may not have time to trigger"},"content":{"rendered":"<p><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.newsbeep.com\/nz\/wp-content\/uploads\/2026\/03\/4JQYBIY_fiord_webp.jpeg\" width=\"1050\" height=\"700\" alt=\"Fiordland has been marked as an area that would face \" heightened=\"\" consequences=\"\" in=\"\" an=\"\" emergency.=\"\" use=\"\" with=\"\" ldr=\"\" story=\"\" only=\"\"\/><\/p>\n<p class=\"photo-captioned__information\">\nFiordland has been marked as an area that would face &#8220;heightened&#8221; consequences in an emergency.<br \/>\nPhoto: ODT\/LDR\n<\/p>\n<p>A new Emergency Management plan for Southland has unearthed an unnerving detail about warning systems in the event of a tsunami.<\/p>\n<p>This week, Southland&#8217;s civil defence emergency management group adopted its plan for the next five years &#8211; a 106-page document which will now be sent to the relevant Minister.<\/p>\n<p>The plan said a tsunami was unlikely, but carried high risk, and gave special mention to the Puysegur Trench southwest of Fiordland.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/www.newsbeep.com\/nz\/wp-content\/uploads\/2025\/12\/4KMHENG_LDR_logo_horizontal_DEFAULT_png\" width=\"576\" height=\"187\" alt=\"\"\/><\/p>\n<p>A large tsunami from that trench posed a hazard to coastal areas on the south and west of the South Island, Tasmania and southeast Australia, it warned.<\/p>\n<p>&#8220;It is unlikely there would be sufficient time to utilise warning systems in the event of a large Puysegur Trench earthquake and so persons in coastal areas in Southland are encouraged to evacuate inland or to high ground if an earthquake is long or strong.&#8221;<\/p>\n<p>The plan identified five high-risk hazards &#8211; earthquakes, tsunami, flooding, human pandemic, and animal pest or disease.<\/p>\n<p>On the topic of earthquakes, there was a 75 percent chance of a major event on the Alpine Fault in the next 50 years, the impact of which would be felt nationally.<\/p>\n<p>The plan also noted that isolated areas such as Fiordland and Rakiura\/Stewart Island faced &#8220;heightened&#8221; consequences in an emergency.<\/p>\n<p>&#8220;Both areas are vulnerable to Alpine Fault earthquakes, tsunami, and severe weather, with steep terrain and fragile lifelines increasing the likelihood of prolonged isolation.&#8221;<\/p>\n<p>With Milford Sound\/Piopiotahi hosting over one million visitors annually, and Rakiura around 40,000, large numbers could be present during an event, it said.<\/p>\n<p>Southland had four main rivers &#8211; Waiau, Aparima, \u014creti and Mataura &#8211; and local emergencies had been called in response to flooding in 2020 and 2023.<\/p>\n<p>Southland by the numbers<\/p>\n<p>The plan broke down a range of numbers for the region, which it noted was the second largest in the country and home to just over 100,000 people.<\/p>\n<p>Southland had the country&#8217;s largest national park, almost 200 lakes, and the longest coastline stretching 3400km.<\/p>\n<p>Mean household income for households last year was $120,900 &#8211; more than $20,000 less than the national average &#8211; and an increasing number of families were using foodbanks, even when a family member was in full time employment, it said.<\/p>\n<p>Temperatures were projected to increase by up to 1 degree Celsius by 2040, and sea levels by at least 0.3 metres for the same period.<\/p>\n<p>On a lighter note, the region was noted for its &#8220;unique &#8216;rolling &#8216;r&#8217; accent&#8217;, inherited from Scottish settlers&#8221;.<\/p>\n<p>LDR is local body journalism co-funded by RNZ and NZ On Air.<\/p>\n","protected":false},"excerpt":{"rendered":"Fiordland has been marked as an area that would face &#8220;heightened&#8221; consequences in an emergency. Photo: ODT\/LDR A&hellip;\n","protected":false},"author":2,"featured_media":354715,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[48,47,42,43,49,46,44,45,40,38,41,39],"class_list":["post-354714","post","type-post","status-publish","format-standard","has-post-thumbnail","category-headlines","tag-audio","tag-current-affairs","tag-headlines","tag-news","tag-podcasts","tag-public-radio","tag-radio-new-zealand","tag-rnz","tag-top-news","tag-top-stories","tag-topnews","tag-topstories"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/354714","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/comments?post=354714"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/354714\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media\/354715"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media?parent=354714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/categories?post=354714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/tags?post=354714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}