A large-scale exercise in February 2027 will gauge how Barcelona would cope with a simulated 50°C heatwave. The plan comes as the region endures another intense summer, with thermometers already nearing 40°C and emergency services on high alert. The 50°C figure is the exercise scenario. AEMET’s Barcelona Airport station records hourly observations, along with daily extremes and accumulated values, to track actual local conditions.
Led by Mayor Jaume Collboni, the initiative is called "Barcelona a 50º C: ensayar hoy para responder mejor mañana." It brings together basic municipal departments and utility companies, with emergency services coordinating the response plan. The goal is to identify weaknesses in the city's infrastructure and test whether electricity and water systems can hold up, while keeping public transport running and healthcare and telecommunications available during a record-breaking heatwave.
Authorities are working on the assumption that temperatures above 50°C could push multiple systems to their limits at once. The simulation will test protocols for maintaining city operations and prioritizing support for the most vulnerable groups. Workshops with major stakeholders are scheduled to begin in October. Aigües de Barcelona and Endesa will take part, along with Naturgy. Red Eléctrica and Transportes Metropolitanos de Barcelona (TMB) are also involved. The sessions will map critical infrastructure and analyze how its systems depend on one another. Digital models will predict cascading failures if one service falters.
After the workshops, the first phase of the simulation will take place in February 2027 as a "tabletop exercise," focusing on decision-making and coordination among city services and private partners. A second, on-the-ground drill is planned for September 2027, recreating the effects of an extreme heat event to test real-time responses. The reported plan describes a simulation lasting more than one day, with activities in selected city spaces rather than necessarily across entire neighborhoods; locations were still to be determined. Hospitals and social services will participate, as will the Red Cross. Organizations such as the Aliança contra la Pobresa Energètica will also take part. Representatives from construction and hospitality will join, along with those from urban cleaning. Universities and energy research sectors will also be represented.
Barcelona's approach follows similar efforts in other European cities. Paris, for example, conducted a comparable simulation in autumn 2023 to assess how its basic services would respond to climate-driven heat emergencies. The growing frequency and severity of heatwaves across Europe have prompted cities to rethink emergency planning. During the Tour de France, organizers were compelled to shorten stages and deploy advanced cooling measures for athletes, as detailed in this report on how French cities and events are adapting to extreme heat.
City officials say the upcoming simulation is intended to address social equity alongside crisis management. Extreme heat disproportionately affects older people and those with health conditions. Residents in less protected neighborhoods are also at risk. By stress-testing protocols and updating emergency plans, Barcelona aims to strengthen preparedness for future generations. The city's strategy reflects a broader recognition that climate change is a present-day challenge requiring immediate, coordinated action.
Spain has experienced a marked increase in the frequency and intensity of heatwaves over the past decade, with 2022 and 2023 both setting new national temperature records. Urban areas such as Barcelona are particularly vulnerable to the urban heat island effect, which can raise local temperatures several degrees above those in surrounding regions. A separate report on a later Catalan heat episode forecast highs of up to 40°C inland and about 35°C on the coast. It also flagged unusually warm nights in Barcelona. The city's proactive approach may serve as a model for other European municipalities facing similar risks.
Climate-risk reporting has also discussed the possibility of a strong El Niño during 2026 to 2027. One report cited the World Meteorological Organization’s near-100% probability that El Niño conditions would persist through February 2027. It also quoted CSIC researcher Antonio Turiel identifying summer 2027 as a period of concern. That broader climate context is not a specific forecast that Barcelona will reach 50°C. Climate projections indicate that extreme weather events will become more common, making the effectiveness of such simulations critical to safeguarding public health and keeping impressive services running during future crises.
