Climate Crisis Boosted Deadly Asian Storms, Over 1,750 Dead in Floods
December 11, 2025
Deadly storms in Asia killed more than 1,750 people due to the climate crisis, scientists have said. Heavy rains became much stronger, causing severe flooding in Sri Lanka, Indonesia, and Malaysia. Floodwaters in Sri Lanka reached the second floor of buildings, while forest loss in Sumatra worsened flooding by speeding runoff from hillsides. In late November, Cyclone Ditwah hit Sri Lanka and Cyclone Senyar swept through Sumatra and peninsular Malaysia. Millions were affected, and the disasters rank among the deadliest recent weather events. The World Weather Attribution group reported that five-day heavy rains linked to Cyclone Senyar became 28% to 160% more intense due to human-caused global heating. In Sri Lanka, these rains increased by 9% to 50%. Many have lost homes and livelihoods, with the poorest suffering most. Dr Sarah Kew from the Royal Netherlands Meteorological Institute said, "The combination of heavy monsoon rains and climate change is a deadly mix." Prof Lalith Rajapakse from the University of Moratuwa said, "Cyclones like Ditwah have become an alarming new reality for Sri Lanka and the wider south and south-east Asian region." He added flooding levels this year exceeded 14 to 15 feet, far beyond the usual one to two feet. Warmer air holds more moisture, making rains heavier, scientists explained. Studies show extreme rainfall rises with global heating, now at 1.3°C above pre-industrial levels. Climate models had difficulty matching these events due to ocean temperature shifts like La Niña, but data confirmed global warming intensified the storms. Dr Mariam Zachariah of Imperial College London said, "Reducing reliance on fossil fuels is necessary for reducing the intensity of future extreme events." Maja Vahlberg of the Red Cross Red Climate Centre pointed out that urban growth in floodplains and deforestation worsened flood impacts, increasing risks of landslides and debris flows. Damage in Sri Lanka is initially estimated at $6-7 billion, or 3-5% of the national GDP. Prof Rajapakse said this should be a clear warning to prepare for more severe climate extremes ahead.
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Tags:
Climate crisis
Deadly Storms
Cyclone Ditwah
Cyclone Senyar
Asia Floods
Global Heating
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