{"id":20000,"date":"2011-01-11T21:19:13","date_gmt":"2011-01-11T19:19:13","guid":{"rendered":"http:\/\/staging.sillon38.com\/?p=20000"},"modified":"2011-01-11T21:19:13","modified_gmt":"2011-01-11T19:19:13","slug":"avalanches-en-isere-risque-niveau-3-a-5","status":"publish","type":"post","link":"https:\/\/www.sillon38.com\/blog\/2011\/01\/11\/avalanches-en-isere-risque-niveau-3-a-5\/","title":{"rendered":"Avalanches en Is\u00e8re: risque niveau 3 \u00e0 5"},"content":{"rendered":"<p><span style=\"color: #000000;\"><br \/>\n<\/span> <strong><span style=\"color: #000000;\">La Pr\u00e9fecture de l\u2019Is\u00e8re appelle votre attention sur un risque d\u2019avalanches de niveau 3 \u00e0 5 signal\u00e9 par M\u00e9t\u00e9o France dans son bulletin du 11 janvier 2011 qui affectera les massifs du d\u00e9partement de l\u2019Is\u00e8re mercredi 12 janvier.<\/p>\n<p>En moyenne montagne, de 1700 \u00e0 2 300 m\u00e8tres : Risque marqu\u00e9 de niveau 3 \u00e0 5<\/p>\n<p>La couche de neige r\u00e9cente est souffl\u00e9e en altitude, parfois cartonn\u00e9e.<br \/>\nLe manteau neigeux est particuli\u00e8rement instable pr\u00e8s des cr\u00eates ou en pieds de barres rocheuses.<br \/>\nLe risque de d\u00e9clenchement de plaques est marqu\u00e9 en face Est \u00e0 Sud.<br \/>\nDes ruptures de plaques peuvent se produire au passage d\u2019un skieur notamment.<br \/>\nDe plus, en pentes Sud, des avalanches de neige lourde (neige humidifi\u00e9e) pourront se produire.<\/p>\n<p>En haute montagne, au- dessus de 2 300 m\u00e8tres : Risque fort de niveau 4 \u00e0 5<\/p>\n<p>Au del\u00e0 de 2300 m\u00e8tres\u00a0 les quantit\u00e9s de neige fra\u00eeche peuvent atteindre des valeurs de 40 \u00e0 50 cm voire 60 sur Belledonne et les Grandes Rousses.<\/p>\n<p>Souffl\u00e9e par des vents de direction Ouest puis Nord, la neige pourra former des plaques ou structures instables dans de nombreux versants, souvent difficiles \u00e0 d\u00e9tecter car ayant l\u2019apparence de poudreuse.<\/p>\n<p>Le risque accidentel d\u2019avalanches deviendra donc fort demain mercredi avec un risque de rupture de plaques possible.<\/p>\n<p>La Pr\u00e9fecture de l\u2019Is\u00e8re vous invite donc \u00e0 la plus grande prudence dans ces secteurs o\u00f9 la pratique du ski ou de la raquette en dehors des pistes balis\u00e9es est\u00a0 fortement d\u00e9conseill\u00e9e.<\/span><br \/>\n<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>La Pr\u00e9fecture de l\u2019Is\u00e8re appelle votre attention sur un risque d\u2019avalanches de niveau 3 \u00e0 5 signal\u00e9 par M\u00e9t\u00e9o France dans son bulletin du 11 janvier 2011 qui affectera les massifs du d\u00e9partement de l\u2019Is\u00e8re mercredi 12 janvier.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[46],"tags":[2994,4765],"class_list":["post-20000","post","type-post","status-publish","format-standard","hentry","category-montagne-environnement","tag-isere","tag-risque-davalanche"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Avalanches en Is\u00e8re: risque niveau 3 \u00e0 5 -<\/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:\/\/www.sillon38.com\/blog\/2011\/01\/11\/avalanches-en-isere-risque-niveau-3-a-5\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Avalanches en Is\u00e8re: 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