El Niño and La Niña Shifts Signal Intensified Climate Risks
As La Niña conditions weaken, the World Meteorological Organization (WMO) warns of a potential El Niño development later in 2026, raising concerns about escalating global temperatures and an increased risk of extreme weather events worldwide. These shifts in climate patterns underscore the growing urgency for robust preparedness measures and resilient infrastructure, particularly for vulnerable populations.
Transitioning Climate Patterns
The WMO announced earlier this week that La Niña conditions are fading, transitioning towards an ENSO-neutral phase – a state where neither El Niño nor La Niña is present and oceanic and atmospheric conditions in the tropical Pacific remain near average. However, this neutrality is expected to be short-lived. Forecasts indicate a 60 percent chance of ENSO-neutral conditions persisting from March through May, decreasing to around 60 percent by May-July as the likelihood of El Niño developing rises to approximately 40 percent. Inter Press Service reports on these developments.
El Niño’s Potential Impact
El Niño, characterized by warmer-than-average sea surface temperatures in the central and eastern tropical Pacific Ocean, is typically associated with rising global temperatures and a heightened risk of extreme weather. The most recent El Niño event (2023-2024) was one of the five strongest on record, contributing to record-breaking global temperatures in 2024, according to WMO Secretary-General Celeste Saulo.
Climate scientist Jennifer Francis of the Woodwell Climate Research Center warns that the development of El Niño could lead to a latest global temperature record, stating, “’Normal’ was left in the dust decades ago. And with this much heat in the system, everyone should buckle up for the extreme weather it will fuel.”
Health and Economic Consequences
Intensifying El Niño periods are increasingly detrimental to human health and life expectancy. A study led by Professor Benjamin Horton at City University of Hong Kong, published in January, examined the long-term impacts of El Niño on human health across ten Pacific Rim countries, including the United States, Japan, Hong Kong, Singapore, and Australia. The research revealed a strong correlation between hotter El Niño events and increased rates of infectious diseases, cardiovascular and respiratory illnesses, particularly among children and the elderly. The study also highlighted disruptions to healthcare systems due to infrastructure damage.
Historically, the 1982-1983 and 1997-1998 El Niño events were linked to lowered life expectancy by approximately one year and one-third of a year, respectively, resulting in economic losses of roughly $2.6 trillion and $4.7 trillion. Professor Horton warns that intensifying El Niño events could reduce life expectancy by up to 2.8 years and generate cumulative losses of approximately $35 trillion by 2100.
Preparedness and Mitigation
Professor Horton emphasizes the importance of proactive planning to mitigate the impacts of El Niño, including strong early-warning systems, heat-health action plans, improved water management, and protection for workers exposed to extreme heat. Resilient infrastructure, climate-smart agriculture, and prepared public health systems are also crucial.
Recent Impacts in the Philippines
The Philippines has already experienced the devastating effects of extreme weather events. In late October 2024, Severe Tropical Storm Trami (known locally as Kristine) caused widespread and disastrous flooding, particularly in Luzon and Region 5. UNICEF and other organizations, including Action Against Hunger and Plan International Pilipinas, are working to provide relief. Bula Central School in Bula, Camarines Sur, remained flooded a week after Trami, illustrating the intensified climate risks associated with warming oceans. Culture Unplugged reports on the ongoing situation.
Following Trami, Tropical Cyclone Kong-rey (Leon) further exacerbated the situation, particularly in Northern Luzon and the Batanes Islands. Another tropical cyclone is currently tracking a similar path, potentially impacting Northern Luzon and Regions 1 and 2. UNOCHA highlights the continued need for increased relief efforts.
Key Takeaways
- La Niña conditions are weakening, with a growing likelihood of El Niño development later in 2026.
- El Niño is associated with rising global temperatures and an increased risk of extreme weather events.
- Intensifying El Niño periods have detrimental effects on human health and life expectancy.
- Proactive planning, resilient infrastructure, and robust early-warning systems are crucial for mitigating the impacts of El Niño.
- The Philippines is already experiencing the devastating consequences of extreme weather events, highlighting the urgent need for climate action.