{"id":11796,"date":"2021-08-21T15:25:00","date_gmt":"2021-08-21T15:25:00","guid":{"rendered":"https:\/\/deliry.com\/?p=11796"},"modified":"2026-05-01T15:35:15","modified_gmt":"2026-05-01T15:35:15","slug":"29-aout-2021-louragan-ida-passe-en-categorie-4-et-menaces-en-louisiane","status":"publish","type":"post","link":"https:\/\/deliry.com\/?p=11796","title":{"rendered":"29 ao\u00fbt 2021 – L\u2019ouragan Ida passe en cat\u00e9gorie 4 et menaces en Louisiane"},"content":{"rendered":"\n

Seize ans apr\u00e8s Katrina, l\u2019ouragan Ida menace la Louisiane apr\u00e8s \u00eatre pass\u00e9 sur Cuba. On envisage des rafales \u00e0 200 km\/h, voire 250 km\/h (possible cat\u00e9gorie 5 envisag\u00e9e), sur les c\u00f4tes am\u00e9ricaines ce dimanche 29 ao\u00fbt 2021. Cet ouragan pourrait \u00eatre le plus fort \u00e0 toucher la Louisiane depuis 1850, c\u2019est \u00e0 dire les d\u00e9buts de la m\u00e9t\u00e9orologie moderne.<\/p>\n\n\n\n

Ce n\u2019\u00e9tait qu\u2019une temp\u00eate tropicale (rafales \u00e0 130 km\/h) lorsque la d\u00e9pression a touch\u00e9 Cuba vendredi, mais il a rapidement forci en cat\u00e9gorie 4 (sur une \u00e9chelle de 5). Il devrait m\u00eame encore se renforcer avant d\u2019arriver sur les c\u00f4tes am\u00e9ricaines au niveau de la Louisiane. L\u2019\u00e9quivalent de pr\u00e8s d\u2019une ann\u00e9e de pluie est pr\u00e9vue en cumuls, soit plus de 500 mm par endroits. Il s\u2019affaiblira en entrant dans le continent et s\u2019orientera en temp\u00eate jusqu\u2019aux environs de Washington, traversant le centre des Etats-Unis.<\/p>\n\n\n

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Les populations tentent d\u2019\u00e9vacuer la r\u00e9gion et des bouchons monstre se constituent. Le pr\u00e9sident am\u00e9ricain Joe Biden a mis en garde les populations d\u00e8s samedi apr\u00e8s-midi.<\/p>\n\n\n

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Observations<\/p>\n\n\n

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Source \u2013 \u00a9 USPW Reuters – shared<\/a><\/figcaption><\/figure>\n<\/div>\n\n\n

Les pr\u00e9visions concernant l\u2019ouragan Ida se sont confirm\u00e9es et ont m\u00eame \u00e9t\u00e9 d\u00e9pass\u00e9es. Des vents moyens de 240 km\/h ont \u00e9t\u00e9 enregistr\u00e9s sur les c\u00f4tes de Louisiane et m\u00eame une rafale \u00e0 277 km\/h a \u00e9t\u00e9 enregistr\u00e9e par un bateau \u00e0 Roche Fourchon. Il s\u2019agit de l\u2019ouragan le plus puissant \u00e0 avoir touch\u00e9 la Louisiane, \u00e0 \u00e9galit\u00e9 avec Laura de 2020 et Last Island de 1856. Sa pression est descendue \u00e0 930 hPa ce qui le situe en record juste apr\u00e8s Katrina en 2005. De larges zones littorales ont \u00e9t\u00e9 inond\u00e9es, mais la situation para\u00eet moins grave que celle de Katrina. Des pluies intenses jusqu\u2019\u00e0 430 mm sont tomb\u00e9es comme pr\u00e9vu. C\u2019est une temp\u00eate tropicale qui va entrer loin dans le terres avant de se transformer en simple d\u00e9pression (voir carte ci-dessous).<\/p>\n\n\n

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Source \u2013 \u00a9 Visactu –\u00a0shared<\/a><\/figcaption><\/figure>\n<\/div>\n\n\n





<\/p>\n","protected":false},"excerpt":{"rendered":"

Seize ans apr\u00e8s Katrina, l\u2019ouragan Ida menace la Louisiane apr\u00e8s \u00eatre pass\u00e9 sur Cuba. On envisage des rafales \u00e0 200 km\/h, voire 250 km\/h (possible … <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[338],"tags":[],"class_list":["post-11796","post","type-post","status-publish","format-standard","hentry","category-meteorologie"],"_links":{"self":[{"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/posts\/11796","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/deliry.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11796"}],"version-history":[{"count":1,"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/posts\/11796\/revisions"}],"predecessor-version":[{"id":11801,"href":"https:\/\/deliry.com\/index.php?rest_route=\/wp\/v2\/posts\/11796\/revisions\/11801"}],"wp:attachment":[{"href":"https:\/\/deliry.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11796"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/deliry.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11796"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/deliry.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11796"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}