Climate Change Intensifies Deadliest Weather Events, New Analysis Reveals

Fri Jul 11 2025 09:11:03 GMT+0300 (Eastern European Summer Time)
Climate Change Intensifies Deadliest Weather Events, New Analysis Reveals

A recent study links human-caused climate change to the increased severity of the ten deadliest extreme weather events in the past two decades, emphasizing the urgent need for climate action.


The World Weather Attribution group highlights that climate change has intensified extreme weather events like storms, droughts, and heatwaves, contributing to over 570,000 deaths worldwide since 2004. Researchers call for urgent action to address fossil fuel reliance to mitigate future suffering.


Human-induced climate change has significantly amplified the impact of the ten deadliest extreme weather events recorded in the past two decades, according to a new analysis conducted by scientists from the World Weather Attribution (WWA) group at Imperial College London. This comprehensive study reveals that these catastrophic storms, heatwaves, and floods resulted in over 570,000 fatalities across Europe, Africa, and Asia.

The findings underscore advancements in scientific capability to identify the influence of climate change on intricate weather occurrences. The researchers retraced data for catastrophic weather incidents since 2004, marking the year when the first study was published connecting extreme weather with anthropogenic climate change.

Dr. Friederike Otto, co-founder and lead of WWA, asserted the dire implications of the findings for political leaders still relying on fossil fuels. "If we keep burning oil, gas, and coal, the suffering will continue," she warned, calling attention to the moral obligation to address climate change.

Among the most devastating incidents highlighted in the study, the 2011 drought in Somalia, which claimed upwards of 250,000 lives, stands out. The analysis concluded that low rainfall events, increasingly exacerbated by climate change, paved the way for such calamities.

Other fatal events include the heatwave in France during 2015, which was linked to over 3,000 deaths. Notably, heatwave fatalities in 2022 and 2023 see death tolls reaching 53,000 and 37,000, respectively, with researchers asserting that such extreme temperature spikes are now considerably more likely due to climate shifts.

The analysis also covered severe tropical cyclones that impacted Bangladesh (2007), Myanmar (2008), and the Philippines (2013), indicating that climate change made these occurrences more common and severe. Significant flooding in India in 2013 was similarly affected.

The researchers cautioned that the actual mortality from these weather events could be underreported, particularly in vulnerable regions where heatwave-associated deaths are not always officially accounted for.

Innovatively, the study's groundwork was laid by scientists Otto and Dutch climatologist Geert Jan van Oldenborgh, who advanced methodologies to establish connections between extreme weather and global warming. They employed atmospheric models to simulate and discern the likelihood of weather events, factoring in climatic changes since the industrial revolution and the ensuing temperature rises.

Roop Singh of the Red Cross Red Crescent Climate Centre emphasized the urgent need for nations to strengthen resilience against climate challenges, cautioning that even minimal temperature increases will exacerbate the frequency of severe weather conditions. The recent findings advocate for heightened awareness and action in confronting the realities of climate change.

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