{"id":150142,"date":"2026-07-17T08:29:11","date_gmt":"2026-07-17T08:29:11","guid":{"rendered":"https:\/\/www.europesays.com\/cz\/150142\/"},"modified":"2026-07-17T08:29:11","modified_gmt":"2026-07-17T08:29:11","slug":"do-ceska-miri-silne-bourky-nejvetsi-riziko-hrozi-na-vychode-zeme","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/cz\/150142\/","title":{"rendered":"Do \u010ceska m\u00ed\u0159\u00ed siln\u00e9 bou\u0159ky. Nejv\u011bt\u0161\u00ed riziko hroz\u00ed na v\u00fdchod\u011b zem\u011b"},"content":{"rendered":"

Prvn\u00ed ojedin\u011bl\u00e9 bou\u0159ky se vytvo\u0159ily u\u017e v\u00a0rann\u00edch hodin\u00e1ch v\u00a0oblasti Krkono\u0161, jinak bylo nad \u010ceskem pom\u011brn\u011b klidno. Dal\u0161\u00ed v\u00fdvoj po\u010das\u00ed b\u011bhem dne ovlivn\u00ed postupuj\u00edc\u00ed studen\u00e1 fronta.<\/p>\n

Nejv\u00edce bou\u0159ek by se m\u011blo za\u010d\u00edt vytv\u00e1\u0159et odpoledne pod\u00e9l takzvan\u00e9 linie konvergence. Jde o\u00a0oblast, kde se u\u00a0zem\u011b st\u0159et\u00e1vaj\u00ed dva proudy vzduchu. Vzduch je zde nucen vystupovat vzh\u016fru, co\u017e podporuje vznik p\u0159eh\u00e1n\u011bk a\u00a0bou\u0159ek.<\/p>\n

Zat\u00edm nen\u00ed jist\u00e9, kde p\u0159esn\u011b se bude tato linie nach\u00e1zet, v\u011bt\u0161ina model\u016f ale p\u0159edpokl\u00e1d\u00e1 vznik prvn\u00edch odpoledn\u00edch bou\u0159ek ve v\u00fdchodn\u00edch \u010cech\u00e1ch a\u00a0na Vyso\u010din\u011b. Bou\u0159kov\u00e1 j\u00e1dra se\u0159azen\u00e1 do linie by se n\u00e1sledn\u011b m\u011bla spojovat do rozs\u00e1hlej\u0161\u00edch syst\u00e9m\u016f, kter\u00e9 budou postupovat d\u00e1le na Moravu a\u00a0do Slezska.<\/p>\n

<\/a>Siln\u00e9 n\u00e1razy v\u011btru hlavn\u00ed hrozbou<\/p>\n

Pr\u00e1v\u011b ve v\u00fdchodn\u00ed polovin\u011b \u010ceska, zejm\u00e9na na pomez\u00ed \u010cech a\u00a0Moravy, se v\u00a0p\u00e1tek o\u010dek\u00e1vaj\u00ed nejsiln\u011bj\u0161\u00ed bou\u0159ky. Panovat zde budou vhodn\u00e9 podm\u00ednky v\u00a0podob\u011b vysok\u00e9 energie v\u00a0atmosf\u00e9\u0159e i\u00a0v\u00fdrazn\u00e9ho vertik\u00e1ln\u00edho st\u0159ihu v\u011btru.<\/p>\n

Foto: Windy<\/p>\n

Vysok\u00e9 odpoledn\u00ed hodnoty dostupn\u00e9 energie CAPE v\u00a0atmosf\u00e9\u0159e podle modelu ECMWF<\/p>\n

Kv\u016fli velk\u00e9 dynamice bou\u0159kov\u00fdch syst\u00e9m\u016f budou hlavn\u00edm nebezpe\u010d\u00edm siln\u00e9 n\u00e1razy v\u011btru, kter\u00e9 mohou ojedin\u011ble dosahovat rychlosti a\u017e kolem 90\u00a0km\/h. Bou\u0159ky p\u0159inesou tak\u00e9 p\u0159\u00edvalov\u00e9 sr\u00e1\u017eky s\u00a0\u00fahrny a\u017e 50\u00a0milimetr\u016f. V\u00fdjime\u010dn\u011b se m\u016f\u017ee vytvo\u0159it i\u00a0izolovan\u00e1 supercela, v\u00a0n\u00ed\u017e se mohou objevit kroupy o\u00a0pr\u016fm\u011bru p\u0159es dva centimetry.<\/p>\n

Bou\u0159ky se mohou objevit tak\u00e9 v\u00a0z\u00e1padn\u00ed polovin\u011b \u010ceska, p\u0159edev\u0161\u00edm ve\u010der, kdy sem doraz\u00ed syst\u00e9my postupuj\u00edc\u00ed z\u00a0Bavorska. Bou\u0159e, kter\u00e9 ve \u010dtvrtek ve\u010der a\u00a0v noci na p\u00e1tek postihly jihoz\u00e1pad N\u011bmecka, si vy\u017e\u00e1daly jednu ob\u011b\u0165 a\u00a0n\u011bkolik zran\u011bn\u00fdch. V\u00a0\u010cesku se ale o\u010dek\u00e1v\u00e1, \u017ee bou\u0159ky budou na z\u00e1pad\u011b m\u00e9n\u011b intenzivn\u00ed ne\u017e ve v\u00fdchodn\u00ed \u010d\u00e1sti republiky.<\/p>\n

P\u0159ed siln\u00fdmi bou\u0159kami na cel\u00e9m \u00fazem\u00ed \u010ceska varovali u\u017e ve \u010dtvrtek meteorologov\u00e9 z\u00a0\u010cesk\u00e9ho hydrometeorologick\u00e9ho \u00fastavu (\u010cHM\u00da). Z\u00e1rove\u0148 upozornili, \u017ee b\u011bhem p\u00e1tku mohou vydanou v\u00fdstrahu podle aktu\u00e1ln\u00edho v\u00fdvoje je\u0161t\u011b up\u0159esnit.<\/p>\n

<\/a>Bou\u0159kov\u00e9 parametry CAPE a\u00a0st\u0159ih v\u011btruCAPE \/ instabilita<\/p>\n

Parametr CAPE ur\u010duje mno\u017estv\u00ed potenci\u00e1ln\u011b dostupn\u00e9 energie pro vznik vzestupn\u00fdch pohyb\u016f vzduchu. Tato energie se na modelech ud\u00e1v\u00e1 v\u00a0joulech na kilogram vzduchov\u00e9 hmoty. Kl\u00ed\u010dov\u00fdm faktorem pro v\u00fdvoj bou\u0159ek je tzv. instabilita, tedy rychl\u00fd pokles teploty s\u00a0v\u00fd\u0161kou a\u00a0z\u00e1rove\u0148 p\u0159\u00edtomnost vy\u0161\u0161\u00ed vlhkosti.<\/p>\n

Instabilita je jedn\u00edm z\u00a0nejd\u016fle\u017eit\u011bj\u0161\u00edch atmosf\u00e9rick\u00fdch ukazatel\u016f pro mo\u017en\u00fd vznik bou\u0159ek. Hodnoty CAPE p\u0159es 1000\u00a0j\/kg ji\u017e zna\u010d\u00ed mo\u017enost siln\u00fdch bou\u0159\u00ed. Pokud nen\u00ed k\u00a0dispozici \u017e\u00e1dn\u00fd spou\u0161t\u011bc\u00ed impuls (nap\u0159\u00edklad front\u00e1ln\u00ed rozhran\u00ed nebo linie konvergence), ke vzniku bou\u0159ek nemus\u00ed v\u016fbec doj\u00edt.<\/p>\n

St\u0159ih v\u011btru<\/p>\n

Pro vznik siln\u00fdch a\u00a0organizovan\u00fdch bou\u0159ek s\u00a0del\u0161\u00ed \u017eivotnost\u00ed je d\u016fle\u017eit\u00fd tzv. vertik\u00e1ln\u00ed st\u0159ih v\u011btru. Na modelech se ud\u00e1v\u00e1 v\u00a0metrech za sekundu a\u00a0zna\u010d\u00ed zm\u011bnu sm\u011bru a\u00a0rychlosti v\u011btru s\u00a0v\u00fd\u0161kou. Hodnoty nad 15\u00a0m\/s spolu s\u00a0vy\u0161\u0161\u00edm CAPE zna\u010d\u00ed mo\u017enost tvorby supercel – izolovan\u00fdch bou\u0159ek s\u00a0jedn\u00edm dominantn\u00edm rotuj\u00edc\u00edm proudem. Samotn\u00fd st\u0159ih v\u011btru bez energie je pro vznik bou\u0159ek irelevantn\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"Prvn\u00ed ojedin\u011bl\u00e9 bou\u0159ky se vytvo\u0159ily u\u017e v\u00a0rann\u00edch hodin\u00e1ch v\u00a0oblasti Krkono\u0161, jinak bylo nad \u010ceskem pom\u011brn\u011b klidno. Dal\u0161\u00ed v\u00fdvoj…\n","protected":false},"author":2,"featured_media":150143,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[7],"tags":[3862,43,42,41,40,10795,255,26842,11416],"class_list":["post-150142","post","type-post","status-publish","format-standard","has-post-thumbnail","category-cesko","tag-bourka","tag-ceska-republika","tag-cesko","tag-czech-republic","tag-czechia","tag-kroupy-pocasi","tag-pocasi","tag-privalove-deste","tag-vitr"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@cz\/116934381908779324","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/150142","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/comments?post=150142"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/150142\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/150143"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=150142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=150142"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=150142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}