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V obci je samoz\u0159ejm\u011b \u0159ada \u0161kod, po\u0161kozen\u00e9 st\u0159echy, sklen\u00edky i auta (n\u00ed\u017ee sn\u00edmek od Jana Lhotsk\u00e9ho). \u201e\u0160t\u011bst\u00edm\u201c v ne\u0161t\u011bst\u00ed byl fakt, \u017ee takto velk\u00e9 kroupy padaly pom\u011brn\u011b \u0159\u00eddce a nedo\u0161lo k je\u0161t\u011b v\u011bt\u0161\u00edm \u0161kod\u00e1m nebo \u00faraz\u016fm.<\/p>\n
Ve v\u010derej\u0161\u00ed v\u00fdstraze jsme p\u0159edpokl\u00e1dali velk\u00e9 kroupy i kolem 3 cm (na \u0159ad\u011b m\u00edst padaly), ale takov\u00fdto extr\u00e9m ne. Jak je to mo\u017en\u00e9.<\/p>\n
Poho\u0159\u00ed a hory maj\u00ed na bou\u0159ky a v\u00fdskyt krup velk\u00fd vliv. P\u0159i vhodn\u00e9m proud\u011bn\u00ed se v z\u00e1v\u011bt\u0159\u00ed poho\u0159\u00ed tvo\u0159\u00ed tzv. z\u00e1v\u011btrn\u00e1 konvergence (sb\u00edhavost proud\u011bn\u00ed), na kter\u00e9 se p\u0159i dobr\u00fdch podm\u00ednk\u00e1ch mohou tvo\u0159it bou\u0159ky \u201ev \u0159ad\u011b\u201c (na sn\u00edmku z radaru n\u00ed\u017ee je konvergence ozna\u010dena). Dobr\u00e9 podm\u00ednky v\u010dera co se t\u00fd\u010de dostupn\u00e9 energie v oblasti opravdu byly (v\u00fdrazn\u00e1 instabilita a vlhkost = mnoho dostupn\u00e9 energie). Co ale teoreticky chyb\u011blo byl v\u00fdrazn\u011bj\u0161\u00ed st\u0159ih v\u011btru. Jen p\u0159i vy\u0161\u0161\u00edm st\u0159ihu v\u011btru mohou vzniknout tzv. supercel\u00e1rn\u00ed bou\u0159ky a jedin\u011b ty mohou produkovat kroupy nad 5 cm v pr\u016fm\u011bru.<\/p>\n
V\u010dera se ale v Po\u0161umav\u00ed supercel\u00e1rn\u00ed bou\u0159ky vyskytly, jak to?<\/p>\n
Odpov\u011b\u010f je pr\u00e1v\u011b v lok\u00e1ln\u00edch podm\u00ednk\u00e1ch dan\u00fdch \u0160umavou, kde je vy\u0161\u0161\u00ed st\u0159ih v\u011btru. Prvotn\u00ed anal\u00fdzou radarov\u00fdch dat je jasn\u00e9, \u017ee v oblasti do\u0161lo k podobn\u00e9mu jevu, jako v p\u0159\u00edpad\u011b torn\u00e1da na Morav\u011b v roce 2021. Do\u0161lo k v\u00fdvoji velmi siln\u00fdch bou\u0159ek t\u011bsn\u011b u sebe a tyto bou\u0159ky lok\u00e1ln\u011b zes\u00edlily podm\u00ednky natolik, \u017ee se mohly vyvinout v supercely a produkovat takto velk\u00e9 kroupy. Velmi siln\u00e9 bou\u0159ky bl\u00edzko sebe se v\u017edy hodn\u011b ovliv\u0148uj\u00ed.<\/p>\n
Podobn\u00fd fakt se stal i v p\u0159\u00edpad\u011b ni\u010div\u00e9ho torn\u00e1da v roce 2021, kdy pr\u00e1v\u011b interakce mimo\u0159\u00e1dn\u011b siln\u00fdch supercel podpo\u0159ila vznik tohoto jevu a dost mo\u017en\u00e1 i jeho extr\u00e9mitu.<\/p>\n
Tyto interakce a lok\u00e1ln\u00ed podm\u00ednky je ale mimo\u0159\u00e1dn\u011b t\u011b\u017ek\u00e9 p\u0159edpov\u00eddat by\u0165 je pravda, \u017ee oblast Prachaticka a Vimperska je na tyto situace n\u00e1chyln\u00e1 a nestalo se to zde poprv\u00e9. Takto velk\u00e9 kroupy se ale v minulosti nevyskytly.<\/p>\n
Posledn\u00ed kroupy o pr\u016fm\u011bru 10 cm jsme zaznamenali u n\u00e1s 1. 7. 2022 v Rovensku pod Troskami. A v\u00edte, co se tam tehdy stalo? Do\u0161lo tak\u00e9 ke slou\u010den\u00ed velmi siln\u00fdch bou\u0159ek.<\/p>\n
Tyto situace kr\u00e1sn\u011b ukazuj\u00ed, jak je p\u0159\u00edroda rozmanit\u00e1 a jak jsou na\u0161e mo\u017enosti p\u0159edpov\u011bdi st\u00e1le velmi omezen\u00e9 a “nedokonal\u00e9”. V ned\u00e1vn\u00e9 dob\u011b byly uve\u0159ejn\u011bny studie, kter\u00e9 nazna\u010duj\u00ed, \u017ee pr\u00e1v\u011b interakce bl\u00edzk\u00fdch bou\u0159ek hraj\u00ed p\u0159i v\u00fdvoji velk\u00fdch krup i torn\u00e1d mnohem z\u00e1sadn\u011bj\u0161\u00ed roli, ne\u017e jsme d\u0159\u00edve mysleli.<\/p>\n
Zdroj radarov\u00fdch dat: Aplikace Iradar.app<\/strong><\/a>, radar Hochficht.<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" Analyzujeme <\/p>\n","protected":false},"author":2,"featured_media":379212,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"footnotes":""},"categories":[179],"tags":[],"jetpack_featured_media_url":"https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2026\/06\/30\/nove-kroupy.jpg","_links":{"self":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/379210"}],"collection":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=379210"}],"version-history":[{"count":3,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/379210\/revisions"}],"predecessor-version":[{"id":379218,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/379210\/revisions\/379218"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/media\/379212"}],"wp:attachment":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=379210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=379210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=379210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n\u010cESK\u00dd HYDROMETEOROLOGICK\u00dd \u00daSTAV<\/strong><\/a><\/div>\n<\/div>\nV\u00fdstrahy \u010cesk\u00e9ho hydrometeorologick\u00e9ho \u00fastavu pro regiony a m\u011bsta najdete ZDE<\/a><\/h4>\n
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