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The report covers the onset and timeline of the event, large-scale pressure patterns, air-mass evolution at 850 hPa, atmospheric circulation, weather regimes, sea-surface-temperature changes, and comparisons with previous heat waves using ERA5. It further evaluates precipitation and water balance, streamflow and water temperature, lake levels, groundwater, soil moisture and drought development, and implications for renewable energy generation, energy supply, demand, and electricity prices.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/heat-wave-june-2026-report-no-1-information-as-of-07-july-2026/638839/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/heat-wave-june-2026-report-no-1-information-as-of-07-july-2026/638839.png","ImageObject",300,407,{"name":92,"@type":93},"iuabcfuw","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-11-03","2026-10-22",true,{"@type":102,"interactionType":103,"userInteractionCount":39},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What are the main meteorological components analyzed for the June 2026 heat wave?","Question",{"text":112,"@type":113},"The report analyzes large-scale pressure patterns, 850 hPa air-mass evolution, atmospheric circulation changes, weather regimes and persistence, and sea-surface-temperature evolution during the heat wave.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does the report assess hydrological impacts during the heat wave?",{"text":117,"@type":113},"It examines precipitation and climatic water balance, streamflow, stream water temperature trends, lake water levels, groundwater, and soil moisture including topsoil drought development and moisture-limitation coupling.",{"name":119,"@type":110,"acceptedAnswer":120},"What renewable-energy impacts does the report discuss?",{"text":121,"@type":113},"It links meteorological anomalies to renewable energy generation and evaluates how the heat wave affected energy supply, demand, and prices, including changes in load shapes and regional electricity price patterns during peak hours.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},638839,1793133794,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":39,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},3985747874027,"https://ap-avatar.wpscdn.com/davatar_9964176cb1d06d4a9deccf72a44ae3dc","Center for Disaster Management and Risk Reduction Technology  \nCEDIM Forensic Disaster Analysis (FDA) Group  \nHeat wave June 2026 | Western and Central Europe  \nReport No. 1  \nInformation as of 07 July 2026  \nDOI: 10.5445/IR/1000195086  \nAuthors: Susanna Mohr1, Susanne Benz1, Denise Böhnke1, Hüseyin Çakmak1, Jan Cermak1, Haozhen Cheng1, Ines Dillerup1, Uwe Ehret1, Gabriel Fink2, Jannick Fischer von zur Gathen1, Sarah Ho1, Julian Hoffmann1, Emma Holmberg3, Tatiana Klimiuk1, Alexander Lemburg1, Patrick Ludwig1, Bernhard Mühr4, Joaquim Pinto1, Sonja Rosenberg1, Andrew Ross5, Andreas Schäfer1,6, Johannes Schuhmacher1, Christian Sperka1, Michael Kunz1  \n1 Karlsruhe Institute of Technology (KIT)  \n2 Landesanstalt für Umwelt Baden-Württemberg (LUBW)  \n3 University of Bern  \n4 EWB Wetterberatung GmbH  \n5 Forschungszentrum Jülich (FZJ)  \n6 Risklayer GmbH  \n\n| 26th June 2026\u003Cbr>| 27th June 2026\u003Cbr>| 28th June 2026\u003Cbr>|\n| --- | --- | --- |\n\nFig. 1: Daily maximum temperatures during the peak of the June 2026 heat wave in Germany (26th to 28th June 2026; Data: HYRAS, DWD).  \nTable of content  \n1. Summary ......................................................................................................................................................... 2  \n2. Meteorological information............................................................................................................................ 4  \n2.1. Analysis of large-scale pressure pattern................................................................................................ 4  \n2.1.1. Onset of the heat wave: 13rd to 15th June 2026 ......................................................................... 4  \n2.1.2. Timeline and peak of the heat wave: 16th to 29th June 2026 ..................................................... 4  \n2.2. Analyses of air masses at the 850 hPa geopotential level..................................................................... 5  \n2.3. Evolution of the large-scale atmospheric circulation ............................................................................ 8  \n2.4. Weather regimes and atmospheric persistence ................................................................................... 9  \n2.5. Analyses of sea surface temperature at the start of and during the heat wave ................................. 11  \n2.6. The heat wave in Germany in June 2026............................................................................................. 12  \n2.6.1. Historical perspective based on the Karlsruhe temperature series ........................................... 13  \n2.7. The heat wave in Europe in June 2026 ................................................................................................ 14  \n2.7.1. Observed temperature records during the June 2026 heat wave.............................................. 14  \n2.7.2. Spatiotemporal evolution of the June 2026 heat wave from ERA5 ........................................... 15  \n2.8. Comparison with previous heat waves in Europe based on ERA5 ...................................................... 17  \n2.8.1. Historical ranking of the heat wave in June 2026 ....................................................................... 17  \n2.8.2. Limitations of the June-based analysis ....................................................................................... 19  \n2.8.3. June 2026 in the context of the full warm season ...................................................................... 19  \n2.9. Convective environment and severe weather impacts during the heat wave ................................... 20  \n3. Hydrological information .............................................................................................................................. 23  \n3.1. Precipitation and climatic water balance ............................................................................................ 23  \n3.2. Streamflow .................................","cbCaih1iII2MApDT","https://ap.wps.com/l/cbCaih1iII2MApDT","pdf",49140871,63,"English","# Summary\n# Meteorological information\n## Analysis of large-scale pressure pattern\n## Analyses of air masses at the 850 hPa geopotential level\n## Evolution of the large-scale atmospheric circulation\n## Weather regimes and atmospheric persistence\n## Analyses of sea surface temperature at the start of and during the heat wave\n## The heat wave in Germany in June 2026\n## The heat wave in Europe in June 2026\n## Comparison with previous heat waves in Europe based on ERA5\n## Convective environment and severe weather impacts during the heat wave\n# Hydrological information\n## Precipitation and climatic water balance\n## Streamflow\n## Stream water temperature\n## Lake water levels\n## Groundwater\n## Soil moisture\n# Impact: Effects on renewable energy\n## Meteorological anomalies and renewable energy generation\n## Impact on energy supply, demand, and prices","[{\"question\":\"What are the main meteorological components analyzed for the June 2026 heat wave?\",\"answer\":\"The report analyzes large-scale pressure patterns, 850 hPa air-mass evolution, atmospheric circulation changes, weather regimes and persistence, and sea-surface-temperature evolution during the heat wave.\"},{\"question\":\"How does the report assess hydrological impacts during the heat wave?\",\"answer\":\"It examines precipitation and climatic water balance, streamflow, stream water temperature trends, lake water levels, groundwater, and soil moisture including topsoil drought development and moisture-limitation coupling.\"},{\"question\":\"What renewable-energy impacts does the report discuss?\",\"answer\":\"It links meteorological anomalies to renewable energy generation and evaluates how the heat wave affected energy supply, demand, and prices, including changes in load shapes and regional electricity price patterns during peak hours.\"}]","Heat wave June 2026 - Report No. 1 - Information as of 07 July 2026 | PDF",1792700158,159]