{"id":79991,"date":"2026-05-09T04:30:12","date_gmt":"2026-05-09T04:30:12","guid":{"rendered":"https:\/\/www.europesays.com\/cz\/79991\/"},"modified":"2026-05-09T04:30:12","modified_gmt":"2026-05-09T04:30:12","slug":"ledovi-muzi-prinesou-ochlazeni-a-ranni-mrazy","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/cz\/79991\/","title":{"rendered":"Ledov\u00ed mu\u017ei p\u0159inesou ochlazen\u00ed a\u00a0rann\u00ed mrazy"},"content":{"rendered":"

Zat\u00edmco v\u00edkend nab\u00eddne p\u0159ev\u00e1\u017en\u011b slune\u010dn\u00e9 a\u00a0tepl\u00e9 po\u010das\u00ed, p\u0159\u00ed\u0161t\u00ed t\u00fdden p\u0159inese v\u00fdraznou zm\u011bnu. P\u0159es na\u0161e \u00fazem\u00ed p\u0159ejde studen\u00e1 fronta, za kterou za\u010dne od severoz\u00e1padu proudit chladn\u00fd oce\u00e1nsk\u00fd vzduch.<\/p>\n

O v\u00edkendu mohou maxima vystoupat a\u017e k\u00a025\u00a0\u00b0C, po p\u0159echodu fronty se ale ochlad\u00ed zhruba o\u00a0deset stup\u0148\u016f. V\u00a0prvn\u00ed \u010d\u00e1sti p\u0159\u00ed\u0161t\u00edho t\u00fddne tak budou teploty v\u00fdrazn\u011b pod dlouhodob\u00fdm pr\u016fm\u011brem. P\u0159echod fronty na \u0159ad\u011b m\u00edst dopln\u00ed i\u00a0de\u0161\u0165ov\u00e9 sr\u00e1\u017eky.<\/p>\n

Prvn\u00edm v\u00fdrazn\u011b chladn\u00fdm dnem by m\u011bl b\u00fdt 12.\u00a0kv\u011bten, tedy shodou okolnost\u00ed i\u00a0prvn\u00ed den takzvan\u00fdch ledov\u00fdch mu\u017e\u016f. Toto ozna\u010den\u00ed pat\u0159\u00ed trojici sv\u011btc\u016f\u00a0Pankr\u00e1c, Serv\u00e1c a\u00a0Bonif\u00e1c, kte\u0159\u00ed maj\u00ed sv\u00e1tek od 12.\u00a0do 14.\u00a0kv\u011btna. Podle pranostik pr\u00e1v\u011b tyto dny p\u0159in\u00e1\u0161ej\u00ed ochlazen\u00ed a\u00a0posledn\u00ed jarn\u00ed mrazy, kter\u00e9 mohou po\u0161kodit \u00farodu nebo kvetouc\u00ed stromy.<\/p>\n

<\/a><\/p>\n

Letos tak bude pr\u016fb\u011bh po\u010das\u00ed pranostice pom\u011brn\u011b dob\u0159e odpov\u00eddat. V\u00a0posledn\u00edch zhruba 25\u00a0letech jde nav\u00edc o\u00a0pom\u011brn\u011b \u010dast\u00fd jev. P\u0159ed ledov\u00fdmi mu\u017ei se \u010dasto otepl\u00ed a\u00a0n\u00e1sledn\u011b doraz\u00ed v\u00fdrazn\u011bj\u0161\u00ed propad teplot, v\u010detn\u011b t\u011bch rann\u00edch minim\u00e1ln\u00edch.<\/p>\n

P\u0159ed rokem 2000\u00a0se podobn\u00fd pr\u016fb\u011bh po\u010das\u00ed objevoval v\u00fdrazn\u011b m\u00e9n\u011b \u010dasto. Pranostika p\u0159itom poch\u00e1z\u00ed u\u017e z\u00a0po\u010d\u00e1tku 15.\u00a0stolet\u00ed, kdy byly kv\u011btnov\u00e9 vp\u00e1dy studen\u00e9ho vzduchu b\u011b\u017en\u011bj\u0161\u00ed ne\u017e dnes. O\u00a0to zaj\u00edmav\u011bj\u0161\u00ed je, \u017ee se v\u00a0posledn\u00edch letech ochlazen\u00ed b\u011bhem ledov\u00fdch mu\u017e\u016f objevuje znovu \u010dast\u011bji.<\/p>\n

Nejv\u011bt\u0161\u00ed zima bude ve st\u0159edu<\/p>\n

Samotn\u00e9 pranostiky \u010dasto odkazuj\u00ed i\u00a0na to, \u017ee pr\u00e1v\u011b v\u00a0tomto obdob\u00ed p\u0159ich\u00e1zej\u00ed posledn\u00ed jarn\u00ed mrazy. Po p\u0159echodu fronty by m\u011blo ub\u00fdvat obla\u010dnosti, co\u017e m\u016f\u017ee zp\u016fsobit na n\u011bkter\u00fdch m\u00edstech pokles rann\u00edch teplot pod bod mrazu, a\u00a0to zejm\u00e9na ve st\u0159edu.<\/p>\n

V dob\u011b, kdy se lid\u00e9 pranostikami v\u00edce \u0159\u00eddili, byly kv\u011btnov\u00e9 rann\u00ed mrazy mnohem b\u011b\u017en\u011bj\u0161\u00ed. Od poloviny 20.\u00a0stolet\u00ed se v\u0161ak st\u00e1vaj\u00ed vz\u00e1cn\u011bj\u0161\u00edmi, p\u0159esto se pozdn\u00ed mrazy st\u00e1le objevuj\u00ed.<\/p>\n

V historick\u00fdch datech<\/a> \u010cesk\u00e9ho hydrometeorologick\u00e9ho \u00fastavu (\u010cHM\u00da) lze mrazy v\u00a0horsk\u00fdch oblastech pozorovat dokonce i\u00a0b\u011bhem l\u00e9ta. Proto jsme se v\u00a0anal\u00fdze zam\u011b\u0159ili pouze na stanice v\u00a0ni\u017e\u0161\u00edch a\u00a0st\u0159edn\u00edch poloh\u00e1ch.<\/p>\n

Posledn\u00ed mrazy, kter\u00e9 zas\u00e1hnou alespo\u0148 deset stanic pod 600\u00a0metry nad mo\u0159em, se od roku 1961\u00a0v\u00a0pr\u016fm\u011bru vyskytovaly 132.\u00a0den roku. V\u00a0nep\u0159estupn\u00e9m roce to odpov\u00edd\u00e1 12.\u00a0kv\u011btnu, tedy na Pankr\u00e1ce, prvn\u00edho z\u00a0ledov\u00fdch mu\u017e\u016f.<\/p>\n

V posledn\u00edch letech sice doch\u00e1z\u00ed k\u00a0d\u0159\u00edv\u011bj\u0161\u00edmu konci mrazov\u00e9 sez\u00f3ny, pozdn\u00ed kv\u011btnov\u00e9 mrazy ale st\u00e1le nejsou v\u00fdjimkou. Nap\u0159\u00edklad v\u00a0letech 2020, 2022\u00a0nebo 2025\u00a0mrzlo na n\u011bkter\u00fdch n\u00ed\u017ee polo\u017een\u00fdch m\u00edstech je\u0161t\u011b i\u00a0na konci kv\u011btna.<\/p>\n

Pravd\u011bpodobnost mraz\u016f nen\u00ed vysok\u00e1<\/p>\n

V\u011bt\u0161ina t\u011bchto mraz\u016f je ale pouze lok\u00e1ln\u00ed. Plo\u0161n\u00e9 mrazy se v\u00a0polovin\u011b kv\u011btna objevuj\u00ed u\u017e jen v\u00fdjime\u010dn\u011b. Ukazuj\u00ed to i\u00a0pr\u016fm\u011brn\u00e9 minim\u00e1ln\u00ed teploty b\u011bhem ledov\u00fdch mu\u017e\u016f v\u00a0letech 1961\u00a0a\u017e 2025, kter\u00e9 p\u0159es zna\u010dn\u00e9 v\u00fdkyvy kol\u00edsaj\u00ed kolem 7\u00a0\u00b0C.<\/p>\n

Zaj\u00edmav\u00e9 p\u0159itom je, \u017ee na rozd\u00edl od jin\u00fdch klimatick\u00fdch ukazatel\u016f zde nen\u00ed patrn\u00fd v\u00fdrazn\u00fd r\u016fstov\u00fd trend. V\u00a0posledn\u00edch letech se pr\u016fm\u011brn\u00e1 minima dokonce m\u00edrn\u011b sn\u00ed\u017eila oproti druh\u00e9 polovin\u011b 20.\u00a0stolet\u00ed. Souvis\u00ed to pr\u00e1v\u011b s\u00a0\u010dast\u011bj\u0161\u00edmi vp\u00e1dy studen\u00e9ho vzduchu v\u00a0tomto obdob\u00ed. Loni nap\u0159\u00edklad dos\u00e1hla pr\u016fm\u011brn\u00e1 minima jen 1,59\u00a0\u00b0C.<\/p>\n

Za cel\u00e9 sledovan\u00e9 obdob\u00ed klesla pr\u016fm\u011brn\u00e1 minim\u00e1ln\u00ed teplota pod nulu pouze dvakr\u00e1t\u00a0\u2013 12.\u00a0kv\u011btna 1978 (\u22121,58\u00a0\u00b0C) a\u00a013.\u00a0kv\u011btna 2020 (\u22120,43\u00a0\u00b0C). Plo\u0161n\u00e9 mrazy ve v\u011bt\u0161in\u011b \u00fazem\u00ed \u010ceska jsou tedy b\u011bhem ledov\u00fdch mu\u017e\u016f velmi vz\u00e1cn\u00e9.<\/p>\n

Potvrzuje to i\u00a0statistika pravd\u011bpodobnosti v\u00fdskytu mrazu ve vybran\u00fdch krajsk\u00fdch m\u011bstech a\u00a0jejich okol\u00ed v\u00a0tabulce n\u00ed\u017ee. B\u011bhem kv\u011btna \u0161ance na mr\u00e1z rychle kles\u00e1 a\u00a0v obdob\u00ed ledov\u00fdch mu\u017e\u016f se v\u011bt\u0161inou pohybuje jen mezi nulou a\u00a0p\u011bti procenty.<\/p>\n

M\u011bsto1. – 10. kv\u011btna11. – 20. kv\u011btna21. – 31. kv\u011btna12. kv\u011btna13. kv\u011btna14. kv\u011btnaBrno2,0 %0,5 %0 %1,5 %0 %0 %\u010cesk\u00e9 Bud\u011bjovice2,3 %1,1 %0,1 %1,5 %0 %1,5 %Hradec Kr\u00e1lov\u00e92,9 %0,6 %0 %1,5 %1,5 %0 %Karlovy Vary2,7 %2,2 %0,6 %6,3 %3,1 %0 %Liberec8,2 %3,7 %1,4 %6,2 %6,2 %3,1 %Olomouc2,6 %0,5 %0 %3,1 %0 %0 %Ostrava3,1 %1,2 %0,1 %1,5 %3,1 %0 %Plze\u014814,0 %9,1 %4,5 %10,5 %8,8 %15,8 %Praha2,9 %1,2 %0,1 %1,5 %0 %1,5 %<\/p>\n

Obavy z\u00a0pozdn\u00edch mraz\u016f tak dnes p\u0159etrv\u00e1vaj\u00ed sp\u00ed\u0161e d\u00edky zn\u00e1m\u00e9 pranostice. Ochlazen\u00ed v\u00a0polovin\u011b kv\u011btna jsou v\u0161ak st\u00e1le pom\u011brn\u011b \u010dast\u00e1 a\u00a0jinak tomu nebude ani letos. Ledov\u00ed mu\u017ei tak sv\u00e9 pov\u011bsti znovu dostoj\u00ed a\u00a0lok\u00e1ln\u011b mo\u017en\u00e1 p\u0159inesou i\u00a0ten rann\u00ed mr\u00e1z.<\/p>\n

<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Zat\u00edmco v\u00edkend nab\u00eddne p\u0159ev\u00e1\u017en\u011b slune\u010dn\u00e9 a\u00a0tepl\u00e9 po\u010das\u00ed, p\u0159\u00ed\u0161t\u00ed t\u00fdden p\u0159inese v\u00fdraznou zm\u011bnu. P\u0159es na\u0161e \u00fazem\u00ed p\u0159ejde studen\u00e1 fronta,…\n","protected":false},"author":2,"featured_media":79992,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[1367,43,42,41,40,1443,9711,255,1316],"class_list":{"0":"post-79991","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-cesko","8":"tag-analyza","9":"tag-ceska-republika","10":"tag-cesko","11":"tag-czech-republic","12":"tag-czechia","13":"tag-mraz","14":"tag-ochlazeni","15":"tag-pocasi","16":"tag-teplota"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@cz\/116542742888764127","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/79991","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=79991"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/79991\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/79992"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=79991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=79991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=79991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}