{"id":5424,"date":"2025-04-15T14:27:02","date_gmt":"2025-04-15T10:27:02","guid":{"rendered":"https:\/\/meteo974.fr\/?p=5424"},"modified":"2025-04-15T15:05:21","modified_gmt":"2025-04-15T11:05:21","slug":"tornado-alley-2025-en-approche","status":"publish","type":"post","link":"http:\/\/meteo974.fr\/?p=5424","title":{"rendered":"Tornado Alley 2025 en approche&#8230;"},"content":{"rendered":"\n<div class=\"wp-block-cover is-light\" style=\"margin-top:32px;margin-bottom:32px\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim\" style=\"background-color:#979ea6\"><\/span><img fetchpriority=\"high\" decoding=\"async\" width=\"2038\" height=\"990\" class=\"wp-block-cover__image-background wp-image-5426\" alt=\"\" src=\"https:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/canadian2015.png\" data-object-fit=\"cover\" srcset=\"http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/canadian2015.png 2038w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/canadian2015-300x146.png 300w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/canadian2015-1024x497.png 1024w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/canadian2015-768x373.png 768w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/canadian2015-1536x746.png 1536w\" sizes=\"(max-width: 2038px) 100vw, 2038px\" \/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\">\n<h2 class=\"wp-block-heading has-text-align-center has-large-font-size\"><strong>Tornado Alley 2025 en approche&#8230;<\/strong><\/h2>\n<\/div><\/div>\n\n\n\n<p>Le mois de mai approche et, comme tous les 2 ans quasiment, me revoici embarqu\u00e9 pour une chasse aux tornades aux Etats-Unis du 12 au 30 mai pendant quasiment trois semaines. Pour ma part, d\u00e9part de l\u2019\u00eele de la R\u00e9union d\u00e8s le 9 mai pour rejoindre Paris avant de re-d\u00e9coller pour Dallas le 12 mai au matin. 21 heures de vol en tout en un peu plus de 48 heures. Le retour sera plus \u00ab\u00a0hard\u00a0\u00bb puisque cette m\u00eame dur\u00e9e de vol se fera sur la journ\u00e9e.<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full has-custom-border\"><img decoding=\"async\" width=\"400\" height=\"472\" src=\"https:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/macocotte1-1.png\" alt=\"\" class=\"wp-image-5429\" style=\"border-radius:12px\" srcset=\"http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/macocotte1-1.png 400w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/macocotte1-1-254x300.png 254w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><figcaption class=\"wp-element-caption\">Bruno Gonzalez<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"400\" height=\"529\" src=\"https:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/paul1.jpeg\" alt=\"\" class=\"wp-image-5439\"\/><figcaption class=\"wp-element-caption\">Paul Julien<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"400\" src=\"https:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/cedric-bischoff.jpeg\" alt=\"\" class=\"wp-image-5431\"\/><figcaption class=\"wp-element-caption\">C\u00e9dric Bischoff<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"400\" height=\"285\" src=\"https:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/fred2025.png\" alt=\"\" class=\"wp-image-5434\" srcset=\"http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/fred2025.png 400w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/fred2025-300x214.png 300w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><figcaption class=\"wp-element-caption\">Fr\u00e9d\u00e9ric Decker<\/figcaption><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-top is-layout-flow wp-block-column-is-layout-flow\">\n<p>L\u2019\u00e9quipe sera compos\u00e9e cette ann\u00e9e bien \u00e9videmment de Bruno Gonzalez, notre \u00ab\u00a0chef\u00a0\u00bb qui m\u2019avait embarqu\u00e9 d\u00e8s 2014 sur les routes am\u00e9ricaines pour chasser, de Paul Julien (comme en 2023) et de C\u00e9dric Bischoff, nouvelle recrue.\u00a0<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"737\" src=\"https:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/tornadoalley2025-1024x737.png\" alt=\"\" class=\"wp-image-5432\" srcset=\"http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/tornadoalley2025-1024x737.png 1024w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/tornadoalley2025-300x216.png 300w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/tornadoalley2025-768x553.png 768w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/tornadoalley2025-1536x1105.png 1536w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/tornadoalley2025.png 1790w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Pr\u00e9sentation de Tornado Alley 2025 (c) Paul Julien<\/figcaption><\/figure>\n\n\n\n<p>Mai est traditionnellement le mois le plus \u00ab&nbsp;tornadique&nbsp;\u00bb de l\u2019ann\u00e9e aux USA, tornades concentr\u00e9es dans la fameuse \u00ab&nbsp;Tornado Alley&nbsp;\u00bb&nbsp; se situant en gros dans les Grandes Plaines entre le Texas et les Dakotas. Sur les 1.200 tornades se produisant chaque ann\u00e9e en moyenne, 300, soit le quart, se produise durant ce mois.<\/p>\n\n\n\n<p>Statistiquement, la deuxi\u00e8me quinzaine de mai est la plus expos\u00e9e (174 tornades du 15 au 31) avec 9 jours tr\u00e8s prolifiques du 22 au 30 mai inclus (10 \u00e0 16 jours cas de tornades par jour en moyenne) et un pic les 24 et 25 (15-16 tornades). Il existe bien un pic d\u00e9j\u00e0 fin avril, mais beaucoup plus court, les 26 et 27, valeur \u00ab&nbsp;exag\u00e9r\u00e9e&nbsp;\u00bb par l\u2019\u00e9norme essaim de tornades de fin avril 2011 (226 reports dans la seule journ\u00e9e du 27 avril 2011 et 86 la veille).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"602\" src=\"https:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/canadian2015a-1024x602.png\" alt=\"\" class=\"wp-image-5433\" srcset=\"http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/canadian2015a-1024x602.png 1024w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/canadian2015a-300x176.png 300w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/canadian2015a-768x452.png 768w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/canadian2015a-1536x903.png 1536w, http:\/\/meteo974.fr\/wp-content\/uploads\/2025\/04\/canadian2015a.png 2019w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Tornade intercept\u00e9e par notre \u00e9quipe de l&rsquo;\u00e9poque (Bruno, Bruno Meignien, Basile Ducournau et moi-m\u00eame) \u00e0 Canadian, Texas, en mai 2015<\/figcaption><\/figure>\n\n\n\n<p>Depuis le 1er janvier 2025, le SPC, service m\u00e9t\u00e9o des ph\u00e9nom\u00e8nes violents de la NOAA aux Etats-Unis, a comptabilit\u00e9 566 reports de tornades, dont 324 en mars (2\u00e8me mois de mars le plus actif derri\u00e8re 2022 et ses 372 reports) et 177 cette premi\u00e8re quinzaine d\u2019avril (au lieu de 98 en moyenne). Une saison qui d\u00e9marre donc fort avec, en prime, des fortes tornades assez fr\u00e9quentes, de type EF3 ou EF4. Depuis le 7 avril, c\u2019est plut\u00f4t l\u2019accalmie, mais les conditions m\u00e9t\u00e9o devraient \u00e0 nouveau s\u2019emballer et la fin du mois pourrait \u00eatre tr\u00e8s agit\u00e9e.<\/p>\n\n\n\n<p>Difficile \u00e0 cette \u00e9ch\u00e9ance de faire une projection sur notre p\u00e9riode de pr\u00e9sence. Toujours est-il que nous y allons, comme toujours, sur la p\u00e9riode la plus propice statistiquement. Et lors du dernier voyage, en mai 2023, nous avons pu profiter de superbes ambiances, d\u2019orages tr\u00e8s esth\u00e9tiques et magnifiquement structur\u00e9s ainsi que de 8 tornades, la plupart\u00a0 de faible activit\u00e9 de courte dur\u00e9e\u2026 en plein anticyclone Om\u00e9ga ! Il s\u2019agissait pourtant de la 2\u00e8me quinzaine de mai la plus calme de ces 15 derni\u00e8res ann\u00e9es. Comme quoi ! Tout est possible aux USA !<\/p>\n\n\n\n<p>Vous pourrez suivre nos p\u00e9rip\u00e9ties jour apr\u00e8s jour sur ce blog d\u00e8s le 12 mai prochain&#8230;<\/p>\n<\/div>\n<\/div>\n\n\n\n<p><\/p>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-a5331a9e wp-block-columns-is-layout-flex\" style=\"padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:15%\">\n<p class=\"has-text-align-left\"><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0b0e4f\" class=\"has-inline-color\">Cat\u00e9gories<\/mark><\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center has-text-color has-link-color wp-elements-f7e1b2246115720c497f5c40769fcee1 is-layout-flow wp-block-column-is-layout-flow\" style=\"color:#59d49c;flex-basis:66.66%\"><div style=\"padding-right:0;padding-left:0;padding-top:var(--wp--preset--spacing--50);padding-bottom:var(--wp--preset--spacing--50)\" class=\"taxonomy-post_tag wp-block-post-terms\"><a href=\"http:\/\/meteo974.fr\/?tag=ciel\" rel=\"tag\">Ciel<\/a><span class=\"wp-block-post-terms__separator\"> | <\/span><a href=\"http:\/\/meteo974.fr\/?tag=cumulonimbus\" rel=\"tag\">Cumulonimbus<\/a><span class=\"wp-block-post-terms__separator\"> | <\/span><a href=\"http:\/\/meteo974.fr\/?tag=cumulus\" rel=\"tag\">Cumulus<\/a><span class=\"wp-block-post-terms__separator\"> | <\/span><a href=\"http:\/\/meteo974.fr\/?tag=dallas\" rel=\"tag\">Dallas<\/a><span class=\"wp-block-post-terms__separator\"> | <\/span><a href=\"http:\/\/meteo974.fr\/?tag=etats-unis\" rel=\"tag\">Etats-Unis<\/a><span class=\"wp-block-post-terms__separator\"> | <\/span><a href=\"http:\/\/meteo974.fr\/?tag=foudre\" rel=\"tag\">Foudre<\/a><span class=\"wp-block-post-terms__separator\"> | <\/span><a href=\"http:\/\/meteo974.fr\/?tag=incendie\" rel=\"tag\">Incendie<\/a><span class=\"wp-block-post-terms__separator\"> | <\/span><a href=\"http:\/\/meteo974.fr\/?tag=la-reunion\" rel=\"tag\">la R\u00e9union<\/a><span class=\"wp-block-post-terms__separator\"> | <\/span><a href=\"http:\/\/meteo974.fr\/?tag=ocean-indien\" rel=\"tag\">Oc\u00e9an Indien<\/a><span class=\"wp-block-post-terms__separator\"> | <\/span><a href=\"http:\/\/meteo974.fr\/?tag=orage\" rel=\"tag\">Orage<\/a><span class=\"wp-block-post-terms__separator\"> | <\/span><a href=\"http:\/\/meteo974.fr\/?tag=soleil\" rel=\"tag\">Soleil<\/a><span class=\"wp-block-post-terms__separator\"> | <\/span><a href=\"http:\/\/meteo974.fr\/?tag=tornade\" rel=\"tag\">Tornade<\/a><\/div><\/div>\n<\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\" style=\"margin-top:2rem;margin-bottom:2rem\"\/>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le mois de mai approche et, comme tous les 2 ans quasiment, me revoici embarqu\u00e9 pour une chasse aux tornades aux Etats-Unis du 12 au 30 mai pendant quasiment trois semaines. Pour ma part&#8230;<\/p>\n","protected":false},"author":2,"featured_media":5426,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[4,8,5],"tags":[69,114,75,116,117,82,77,44,52,78,66,113],"class_list":["post-5424","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-climat","category-meteo","category-ocean","tag-ciel","tag-cumulonimbus","tag-cumulus","tag-dallas","tag-etats-unis","tag-foudre","tag-incendie","tag-la-reunion","tag-ocean-indien","tag-orage","tag-soleil","tag-tornade"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Tornado Alley 2025 en approche... - M\u00e9t\u00e9o974<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/meteo974.fr\/?p=5424\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Tornado Alley 2025 en approche... - M\u00e9t\u00e9o974\" \/>\n<meta property=\"og:description\" content=\"Le mois de mai approche et, comme tous les 2 ans quasiment, me revoici embarqu\u00e9 pour une chasse aux tornades aux Etats-Unis du 12 au 30 mai pendant quasiment trois semaines. 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