A sprawling heat dome has settled over southern Europe, prompting red-level heat alerts across France, Italy and Spain. British holidaymakers have been warned to expect daytime highs exceeding 40 degrees Celsius, with night-time temperatures remaining above 25 degrees Celsius a threshold that prevents the body from recovering. The Italian health ministry has placed 14 cities on red alert, including Rome and Florence.
France has activated its heatwave plan in 50 departments, with emergency cooling centres opened in Lyon, Marseille and Bordeaux. Spain’s AEMET weather agency has issued extreme warnings for the Ebro valley and Catalonia. Dr Helena Vance, Science Correspondent: This is not a freak event.
The jet stream is locked into an amplified wavy pattern, a phenomenon linked to a warming Arctic. The tropical air mass is being advected northwards over land surfaces already depleted of soil moisture. Without evaporative cooling, the ground radiates heat back into the air, creating a self-reinforcing feedback loop.
Climate modelling suggests that what was once a one in 500 year event may become a one in 10 year event by mid century. The UK Health Security Agency has issued a Level 3 heat health warning for southern England, though the worst conditions remain over the continent. The EU’s Copernicus Emergency Management Service is monitoring the situation via satellite thermal imaging.
Authorities advise staying indoors during the hottest hours, hydrating and checking on vulnerable neighbours. For the millions heading to the Med, the message is clear: this is not a holiday heatwave but a public health emergency.
