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🌡️🥵 A severe heatwave is currently affecting western Europe, France 🇫🇷 and Spain 🇪🇸 being the most affected countries.
According to @meteofrance Tuesday 23 June was reported the hottest day recorded since measurements began in 1947.
In Spain, @aemet_esp issued a red alert for above average temperatures in several areas in the north of the Iberian Peninsula, including Gipuzkoa, Bizkaia, and Cantabria cities.
🛰️ This data visualisation, based on data from the Copernicus Sentinel-3 satellites acquired on 23 June 2026 at 09:54 UTC, shows the Land Surface Temperatures (LST) across central and southern France, and northern Spain.
Extensive red 🔴 and purple 🟣 areas are visible, indicating peaks of the LST exceeding 50°C. It should be noted that LST values reflect ground surface temperature rather than air temperature. Although the two are broadly correlated, they can differ significantly.
#CopernicusEU Sentinel-3 provides consistent land surface temperature observations, which help monitor heat extremes and support assessments of their effects on public health, infrastructure, agriculture, and ecosystems.
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