“…It was the hottest June in Spain (since 1965;AEMET, 2017), where some local records were exceeded by more than 1°C, and in the Netherlands (since 1901;KNMI, 2017). This month was also the second warmest June in France (since 1900; Meteofrance, 2017) and in Switzerland (since 1864; Meteosuisse, 2017 In spite of this, a noticeably increase in mortality was not reported by the media, arguably due to (i) an efficient implementation of early warning systems following the lessons learned from previous high-impact European mega-heatwaves, such as that of August 2003 (Kirch et al, 2005;García-Herrera et al, 2010;Lowe et al, 2011), and (ii) the use of air conditioning systems (Carmona et al, 2017;Kalvelage et al, 2014), which caused a 15% increase in energy demand in Iberia during the heatwave period (Red Eléctrica Española, http://www.ree.es/ es), reaching the highest value of the June time series (starting in 2010). The extreme temperatures were accompanied by drought conditions across western Europe (García-Herrera et al, 2018) and record-breaking SSTs in the eastern Atlantic and the Mediterranean (Climate Central, 2017).…”