{"id":1258,"date":"2021-07-14T15:30:24","date_gmt":"2021-07-14T15:30:24","guid":{"rendered":"https:\/\/troposferica.com\/meteorologia-extrema\/"},"modified":"2021-07-14T15:40:29","modified_gmt":"2021-07-14T15:40:29","slug":"meteorologia-extrema","status":"publish","type":"post","link":"https:\/\/troposferica.com\/ca\/meteorologia-extrema\/","title":{"rendered":"METEOROLOGIA EXTREMA"},"content":{"rendered":"\n

El passat diumenge 11 de juliol de 2021 vam viure a Arag\u00f3 i Catalunya una situaci\u00f3 de tempestes poc habitual. De fet, aquestes van arrencar de l\u2019est de la comunitat de Castilla-i-Lle\u00f3, viatjant de sud-oest a nord-est i de ponent a llevant a molta velocitat. La formaci\u00f3 i extensi\u00f3 d\u2019aquest tipus de sistemes de tempestes organitzats \u00e9s dif\u00edcil de preveure, i acostumen a indicar el xoc de dues masses d\u2019aire molt contrastades<\/strong><\/span>. La calor va ser molt intensa les hores i dies previs amb temperatures de m\u00e9s de 35 \u00b0C a planes interiors, acumulant energia a les capes inferiors de la troposfera. Paral\u00b7lelament, al llarg del diumenge i des de l\u2019Atl\u00e0ntic, s\u2019anava aproximant una llengua d\u2019aire fred i humit a nivells superiors.<\/p>\n\n\n\n

\"\"
Font: meteociel.fr i TROPOSFERICA<\/figcaption><\/figure>\n\n\n\n

CONSEQ\u00dc\u00c8NCIES D\u2019UNA FORTA CALORADA<\/span><\/h2>\n\n\n\n

La massa d\u2019aire c\u00e0lid superficial tamb\u00e9 era seca. En conseq\u00fc\u00e8ncia, el nivell de condensaci\u00f3 dels n\u00favols es trobava molt amunt. Moltes de les tempestes d\u2019aquesta tongada eren de base alta i \u201cseques\u201d, \u00e9s a dir: molts llamps, vent… per\u00f2 molt escassa precipitaci\u00f3. En molts casos, fins i tot, inexistent.<\/p>\n\n\n\n

Si voleu con\u00e8ixer altre tipus de tempestes, podeu visitar aquest article<\/strong><\/a> del nostre blog.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

TEMPESTES INUSUALS<\/span><\/h2>\n\n\n\n

En ocasions poden portar associats fen\u00f2mens severs com els esclafits<\/strong><\/span>. Corrents sobtats d\u2019aire descendent que en tocar terra es desplacen lateralment a molta velocitat, superant en ocasions els 100 km\/h<\/span><\/strong>. De vegades s\u2019experimenta tamb\u00e9 una pujada intensa i breu de la temperatura i la pressi\u00f3 atmosf\u00e8rica, aix\u00ed com una caiguda en picat de la humitat relativa de l\u2019aire. En els gr\u00e0fics seg\u00fcents es posa de manifest aquest fenomen al seu pas per Albany\u00e0, a la comarca de l\u2019Alt Empord\u00e0, amb un cop de vent de fins a 93 km\/h:<\/p>\n\n\n\n

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Dades registrades per una Davis Vantage Pro 2<\/a>. Font: Jordi Garriga Seguranyes @garrikat<\/figcaption><\/figure>\n\n\n\n

ELS ESCLAFITS C\u00c0LIDS<\/span><\/h2>\n\n\n\n

A punts de muntanya de Catalunya es van registrar fins a 134 km\/h al Puig Sesolles, 115 km\/h a Certescan, 111 km\/h a la Tosa d\u2019Alp o 103 km\/h al Port del Comte. Destaquen tamb\u00e9 els 80 km\/h de Das i Vielha o els 71 km\/h de la Pobla de Segur, entre altres.<\/p>\n\n\n\n

 A Sant Hilari Sacalm, a la comarca de La Selva, els cops de vent ocasionaren destrosses considerables tirant arbres a terra amb cops de vent de fins a 84,4 km\/h.<\/p>\n\n\n\n

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Font: Ajuntament de Sant Hilari Sacalm<\/figcaption><\/figure>\n\n\n\n

\u00c9s possible que amb l\u2019escalfament global<\/span><\/strong>, que \u00e9s un fet, aquest tipus de fen\u00f2mens severs i altres siguin cada cop m\u00e9s recurrents aqu\u00ed a la Pen\u00ednsula i entorn de la Mediterr\u00e0nia en general, com tamb\u00e9 els episodis de forta sequera com el que estem vivint enguany.<\/p>\n","protected":false},"excerpt":{"rendered":"

El passat diumenge 11 de juliol de 2021 vam viure a Arag\u00f3 i Catalunya una situaci\u00f3 de tempestes poc habitual. De fet, aquestes van arrencar de l\u2019est de la comunitat de Castilla-i-Lle\u00f3, viatjant de sud-oest a nord-est i de ponent a llevant a molta velocitat. La formaci\u00f3 i extensi\u00f3 d\u2019aquest tipus de sistemes de tempestes […]\n","protected":false},"author":4,"featured_media":1262,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[75],"tags":[],"class_list":["post-1258","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-curiosidades-ca"],"acf":[],"yoast_head":"\nMETEOROLOGIA EXTREMA - Troposferica<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/troposferica.com\/ca\/meteorologia-extrema\/\" \/>\n<meta property=\"og:locale\" content=\"ca_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"METEOROLOGIA EXTREMA - Troposferica\" \/>\n<meta property=\"og:description\" content=\"El passat diumenge 11 de juliol de 2021 vam viure a Arag\u00f3 i Catalunya una situaci\u00f3 de tempestes poc habitual. De fet, aquestes van arrencar de l\u2019est de la comunitat de Castilla-i-Lle\u00f3, viatjant de sud-oest a nord-est i de ponent a llevant a molta velocitat. 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