Weather disasters of 2025 show dangers growing as climate change advances

Editor’s note: “Behind the News“ is the product of Sun staff assisted by the Sun’s AI lab, which includes a variety of tools such as Anthropic’s Claude, Perplexity AI, Google Gemini and ChatGPT.

The tragic deaths of a woman and a 12-year-old boy in Oklahoma flooding over the weekend are just the latest chapter in a relentless series of weather-related disasters that have marked 2025 as a year of exceptional despair and mounting losses worldwide.

From tornadoes and floods to wildfires and cyclones, the toll on human life and property has been severe, with regions around the globe grappling with the escalating impacts of extreme weather and natural catastrophes[5].

Oklahoma flooding

Late Saturday night, floodwaters in Moore, Okla., swept a vehicle carrying a family of three off the road, killing an adult woman and a 12-year-old boy. The third occupant was hospitalized in critical condition. On Monday, it was confirmed that four people died due to severe weather. The event was described by local authorities as a “historic weather event,” with water levels “considerably higher than what we have observed in recent years.” Multiple high-water rescues were required, and the flooding left significant debris across the region[10].

Los Angeles wildfires

In January, Southern California experienced one of its deadliest and most destructive wildfire outbreaks. Fueled by severe drought conditions, bone-dry vegetation and hurricane-force Santa Ana winds, the wildfires killed at least 30 people, forced over 200,000 to evacuate, and destroyed or damaged more than 18,000 homes and structures — making them among the most devastating in California’s history[5]. The Palisades and Eaton fires alone burned nearly 40,000 acres and decimated entire neighborhoods, including critical infrastructure and community institutions. The economic impact is estimated in the hundreds of billions of dollars, with long-term consequences for families, businesses and the regional economy[5].

Bolivia floods

Bolivia has faced one of its worst flood disasters in recent memory. As of mid-April, at least 55 people have died, with eight still missing, and nearly 2.4 million affected across 234 municipalities. The flooding, triggered by an unusually prolonged and intense rainy season, displaced over 100,000 people and led to a national emergency declaration.

The disaster has been directly linked to shifting climate patterns, with authorities noting that the rainfall’s duration and intensity far exceeded historical norms[9].

South Korea wildfires

Since March 21, South Korea has been battling its deadliest wildfires on record. More than 20 blazes have killed 32 people, including firefighters and government responders, and forced over 37,000 residents to evacuate. The fires have burned nearly 120,000 acres, prompting the government to designate several provinces as disaster zones. Acting president Han Duck-soo called them the worst wildfires in the nation’s history[6].

Indonesia floods and landslides

On Jan. 20, heavy rains in Pekalongan, Central Java, Indonesia, triggered devastating floods and landslides. At least 21 people were killed, with two still missing, after landslides destroyed homes and swept away locals. The disaster also caused significant infrastructure damage and left many communities isolated due to blocked roads and destroyed bridges[8][9].

Argentina floods

In March, flash floods in Bahía Blanca, Argentina, killed at least 16 people, including young children swept away by rising waters. The deluge, which brought more than a year’s worth of rain in hours, left neighborhoods submerged, hundreds unaccounted for, and the city in mourning[11].

Mozambique and Madagascar cyclones

Cyclone Jude struck Mozambique in March, killing at least 14 people and destroying thousands of homes, schools and health facilities. The cyclone’s aftermath left many communities inaccessible due to washed-out roads and bridges[7].

Earlier in the year, Cyclone Dikeledi hit Madagascar, resulting in three deaths and displacing over 5,000 people. Just weeks before, Cyclone Chido caused at least 35 deaths and displaced up to 100,000 in Madagascar and the French territory of Mayotte, with authorities warning that the toll could rise as rescue efforts continued[4].

How does this year compare?

Death toll and economic impact

The January wildfires in Southern California alone resulted in about 30 deaths, ranking among the top weather-related disasters worldwide this year[8].

Other major disasters in 2025 include the Bolivia floods (50 deaths)[2], a deadly U.S. tornado outbreak in March (42 deaths)[16], and wildfires in South Korea (32 deaths)[6].

The U.S. has seen a rising trend in both the number and cost of billion-dollar disasters. In 2024, there were 27 such events, causing at least 568 fatalities and $182.7 billion in damages — the fourth-costliest year on record[3].

Impact on disaster patterns

Climate change fundamentally alters our atmosphere and hydrological cycles, creating conditions that favor more extreme weather events:

• More powerful storms: Rising global temperatures increase atmospheric water vapor, fueling stronger hurricanes and cyclones with higher wind speeds and greater rainfall.[17]

• Intensified flooding: Heavier precipitation from warmer, moisture-rich air combined with rising sea levels has transformed “once-in-a-century” floods into regular occurrences.[12]

• Severe droughts and wildfires: Longer, more intense dry seasons create ideal conditions for devastating wildfires, particularly in regions like the American West, where fire seasons have lengthened significantly.[13]

Why more disasters are occurring

The rise in natural disasters stems from several interconnected factors:

• Climate change: Human-induced warming creates conditions favoring extreme weather events.[14]

• Population vulnerability: More people and valuable assets now occupy high-risk areas like coastlines and floodplains.[15]

• Economic impacts: The cost of natural disasters has skyrocketed, with U.S. billion-dollar disasters increasing from an average of 3.3 per year in the 1980s to over 17 annually from 2014-2023.[18]

The loss of life, destruction of homes, and displacement of entire communities in 2025 underscore the profound human cost of natural disasters. Survivors face not only immediate danger but also long-term trauma, economic hardship and uncertainty about the future. The stories emerging from Oklahoma, Los Angeles, Bolivia, South Korea and beyond are a stark reminder that as the climate warms and development continues apace, the risks — and the stakes — are only growing.

Sources

[2]https://www.reuters.com/world/americas/bolivia-declares-emergency-after-floods-kill-over-50-2025-03-26/

[3]https://www.climate.gov/news-features/blogs/beyond-data/2024-active-year-us-billion-dollar-weather-and-climate-disasters#:~:text=This%20total%20places%202024%20as,and%202022%20(%24183.6%20billion).

[4]https://aimnews.org/2025/03/16/known-cyclone-death-toll-reaches-14/

[5]https://laedc.org/wpcms/wp-content/uploads/2025/02/LAEDC-2025-LA-Wildfires-Study.pdf

[6]https://www.dw.com/en/wildfires-in-south-korea-turn-deadly-prompt-evacuations/a-72005968

[7]https://news.stanford.edu/stories/2024/10/study-links-hurricanes-to-higher-death-rates-long-after-storms-pass

[8]https://www.nbcnews.com/news/us-news/california-wildfires-what-we-know-victims-killed-rcna188240

[9]https://cnn.com/2025/04/10/world/video/bolivia-floods-oppman-pkg-041003aseg3-cnni-world-fast

[10]https://cnn.com/2025/04/20/weather/storms-south-oklahoma-flood-deaths/index.html

[11]https://www.worldweatherattribution.org/consecutive-extreme-heat-and-flooding-events-in-argentina-highlight-the-risk-of-managing-increasingly-frequent-and-intense-hazards-in-a-warming-climate/#:~:text=South%20America,of%20the%20city’s%20annual%20average.

[12]https://www.pbs.org/wnet/peril-and-promise/2022/09/how-climate-change-impacts-each-type-of-natural-disaster/

[13]https://www.oxfam.org/en/5-natural-disasters-beg-climate-action

[14]https://www.worldwildlife.org/stories/is-climate-change-increasing-the-risk-of-disasters

[15]https://www.pewtrusts.org/en/research-and-analysis/articles/2023/10/12/whats-driving-the-boom-in-billion-dollar-disasters-a-lot

[16]https://www.nbcnews.com/news/us-news/42-dead-severe-storms-tornadoes-swept-us-rcna196672

[17] https://www.usgs.gov/faqs/how-can-climate-change-affect-natural-disasters

[18]https://www.climate.gov/news-features/blogs/beyond-data/2023-historic-year-us-billion-dollar-weather-and-climate-disasters