Potentially dangerous meteorological phenomena: an example of the middle-sized Central European city of Olomouc (Czech Republic)

Novotný, Dominik (author), Vysoudil, Miroslav (author)

The article analyses potentially hazardous meteorological phenomena and their spa-tiotemporal variability in Olomouc, a medium-sized Central European city, during 2017–2022. Ten phenomena related to temperature, precipitation, and wind were studied using data from Metropolitan station system Olomouc (MESSO) network and Czech Hydrometeorological Institute (CHMI) stations. Extremes were evaluated using percentiles or CHMI criteria. The phenomena varied in frequency and inten-sity. Daily maximum temperatures ≥ 35 °C were recorded yearly, along with 10 heat waves and tropical nights; tropical days appeared even in May or September. Severe frosts (≤ –20 °C), cold waves, and off-season frosts were also observed. Daily rain-fall ≥ 40 mm and long dry periods occurred. Wind gusts varied significantly across city parts. Results confirm that urban station networks are valuable not only for tar-geted measurements but also for identifying the recurring spatial patterns of extreme weather in urban environments.

• Language: English
• Keywords: urban climate, metropolitan station system Olomouc (MESSO), meteoro-logical hazards, period 2017–2022
• Typology: 1.01 - Original Scientific Article
• Organization: FF - Faculty of Arts
• Publication status: Published
• Publication version: Version of Record
• Publication date: 01.01.2025
• Year: 2025
• Number of pages: Str. 129-163
• Numbering: [Št.] 63
• PID: 20.500.12556/RUL-178829
• UDC: 551.5:502.58(437.3)
• ISSN on article: 0354-0596
• DOI: 10.4312/dela.63.129-163
• COBISS.SI-ID: 265058819
• Publication date in RUL: 30.01.2026

Record is a part of a journal

• Title: Dela
• Publisher: Oddelek za geografijo Filozofske fakultete Univerze v Ljubljani, Oddelek za geografijo Filozofske fakultete Univerze v Ljubljani, Znanstvena založba Filozofske fakultete, Založba Univerze v Ljubljani
• ISSN: 0354-0596
• COBISS.SI-ID: 23805442

Licences

• License: CC BY-SA 4.0, Creative Commons Attribution-ShareAlike 4.0 International
• Link: http://creativecommons.org/licenses/by-sa/4.0/
• Description: This Creative Commons license is very similar to the regular Attribution license, but requires the release of all derivative works under this same license.

Secondary language

• Language: Slovenian
• Title: Potencialno nevarni vremenski pojavi na primeru Olomouca (Republika Češka) kot srednje velikega evropskega mesta

Abstract

Članek analizira potencialno nevarne meteorološke pojave in njihovo prostorsko-časovno spremenljivost v Olomoucu, srednje velikem srednjeevropskem mestu, v obdobju 2017–2022. Na podlagi podatkov iz omrežja Metropolitan station system Olomouc (MESSO) in postaj CHMI smo proučili deset pojavov, povezanih s tem-peraturo, padavinami in vetrom. Ekstremnost je bila ocenjena z uporabo percentilov ali meril CHMI (Czech Hydrometeorological Institute). Pojavi so se razlikovali po pogostosti in intenzivnosti. Vsako leto so bile zabeležene najvišje dnevne temperature ≥ 35 °C ter 10 vročinskih valov in tropskih noči; tropski dnevi so se pojavljali tudi maja ali septembra. Opaženi so bili tudi huda pozeba (≤ –20 °C), hladni valovi in izvensezonska pozeba. Dnevne padavine so znašale ≥ 40 mm in pojavljala so se dolga sušna obdobja. Sunki vetra so se v posameznih delih mesta zelo razlikovali. Rezultati potrjujejo, da so mreže mestnih postaj dragocene ne le za usmerjene meritve, temveč tudi za ugotavljanje ponavljajočih se prostorskih vzorcev ekstremnega vremena v mestnih okoljih.

• Keywords: mestna klima, mestna mreža meteoroloških meritev Olomouca (MESSO), izredni vremenski pojavi, obdobje 2017–2022