{"id":355016,"date":"2026-03-30T10:17:13","date_gmt":"2026-03-30T10:17:13","guid":{"rendered":"https:\/\/www.newsbeep.com\/nz\/355016\/"},"modified":"2026-03-30T10:17:13","modified_gmt":"2026-03-30T10:17:13","slug":"southland-tsunami-warnings-may-not-have-time-to-trigger","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/nz\/355016\/","title":{"rendered":"Southland tsunami warnings may not have time to trigger"},"content":{"rendered":"<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>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>\u00a0&#8211; LDR is local body journalism co-funded by RNZ and NZ On Air.<\/p>\n","protected":false},"excerpt":{"rendered":"A new Emergency Management plan for Southland has unearthed an unnerving detail about warning systems in the event&hellip;\n","protected":false},"author":2,"featured_media":355017,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[42,43,40,38,41,39],"class_list":{"0":"post-355016","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-headlines","8":"tag-headlines","9":"tag-news","10":"tag-top-news","11":"tag-top-stories","12":"tag-topnews","13":"tag-topstories"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/355016","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=355016"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/posts\/355016\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media\/355017"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/media?parent=355016"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/categories?post=355016"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/nz\/wp-json\/wp\/v2\/tags?post=355016"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}