Experts are warning that the extreme wildfires currently devastating parts of Spain are a consequence of a hazardous confluence of weather patterns, climate change, and long-standing land management issues. The fires, particularly one in Los Gallardos, Almería, have been described as encountering a 'worst-case triple combination' of factors, leading to rapid and intense spread.
Professor Guillermo Rein, a Professor of Fire Science at Imperial College London, highlighted that an ignition point within extensive, extremely dry vegetation, coupled with strong winds and a nearby unprepared community, created ideal conditions for the rapid escalation of the fires. Recent heatwaves had already parched the landscape, transforming vegetation into highly combustible fuel. However, Professor Rein stressed that extreme weather alone does not fully account for such a tragedy, suggesting that years of neglect in addressing natural hazards in forests and ecosystems also play a significant role.
Dr Thomas Smith, an Associate Professor in Environmental Geography at the London School of Economics and Political Science (LSE), reinforced the link between the wildfires and extreme heatwave conditions. He explained that fire behaviour, including spread rate and intensity, increases exponentially with more severe fire weather. This means even modest increases in extreme fire weather can lead to disproportionately dangerous fires, a situation exacerbated by record-breaking weather conditions and strong winds.
Joe McNorton, a Land Surface Modeller at the European Centre for Medium Range Weather Forecasts (ECMWF), noted that current conditions mirror those preceding last year's record-breaking fire season across Europe. He pointed to an unusually wet spring that promoted above-average vegetation growth, creating a larger fuel load. This was then followed by a prolonged period of warm, dry conditions, particularly across Iberia from April onwards, which rapidly dried this vegetation and increased its flammability, setting the stage for extreme fire behaviour.
Both Professor Rein and Dr Smith emphasised the role of climate change in intensifying these conditions. Dr Smith stated that climate change is increasing the frequency and intensity of extreme heat and fire weather, which in turn creates these dangerous environments. While individual fires have multiple influencing factors, climate change is inextricably linked to the record-breaking weather driving the current extreme wildfires. Professor Rein further argued that reliance on simply more firefighting resources is insufficient, advocating for a multi-layered approach to wildfire safety that includes public education, vegetation management, early detection, and comprehensive training for both authorities and local populations.
Dr Theodore Keeping, a Research Associate in the Analysis of Extreme Weather and Wildfires at Imperial College London, echoed these sentiments, noting that the combination of a moist spring allowing for vegetation accumulation, a dry summer, and extreme heat is a recurring pattern observed in severe fire seasons.