Super El Nino May Cause 55,000 Extra Heat Deaths
Why in News?
- A super El Nino could cause about 55,000 additional heat-related deaths in India between October 2026 and March 2027, according to the Climate Impact Lab at the University of Chicago, Down To Earth reported on 29 October 2026.
- The figure is up from 15,800 in the lab's September report.
- The lab also launched an El Nino Heat Mortality Tracker with monthly projections up to six months ahead.
Key Terminologies
- El Nino
- A warming of surface waters in the central and eastern Pacific Ocean that changes weather patterns worldwide. It often brings heat and weaker rains to parts of Asia, including India.
- Super El Nino
- A very strong El Nino event. The Down To Earth report says it is driving unusually high temperatures and shifting rainfall patterns around the world.
- Climate Impact Lab
- A research group, including the University of Chicago, that estimates the costs of climate change. It projects additional deaths compared with a normal year.
- Copernicus Climate Change Service (C3S)
- The European service that monitors global temperatures. It reported that August 2026 was the warmest August on record and September the second warmest September.
- Pre-Industrial Level
- The average global temperature before large-scale burning of fossil fuels, used as the base for the 1.5 degrees Celsius limit in the Paris Agreement.
Key Issues
- Rising Toll: The lab projects about 55,000 additional heat-related deaths in India between October 2026 and March 2027, mostly in March. This compares with 15,800 for September 2026 to February 2027 in its earlier report.
- Why the Estimate Rose: The new projection includes March, and uses observed August and September temperatures, which ran warmer than forecast, according to the report.
- Global Record Heat: C3S data show that global monthly temperatures exceeded 1.5 degrees Celsius above pre-industrial levels for two consecutive months. September 2026 averaged 16.27 degrees Celsius, which is 1.63 degrees above the pre-industrial level.
- Global Spread: The lab projects about 857,000 additional deaths worldwide from June 2026 to March 2027, up from 451,000 in the September report, and Nigeria's projected toll of about 56,000 is just above India's.
- Future Normal: The lab warns that conditions in this event resemble those that climate projections say could become normal, so the mortality risk could become common in about 20 years.
Key Implications
Positive/Pros/Merits
- Early Warning: The El Nino Heat Mortality Tracker gives projections up to six months ahead, with state-level data, which helps policymakers to prepare before the heat season.
- Targeting Help: Michael Greenstone, a co-founder of the lab, says decision-makers can act before lives are lost if they anticipate the risks.
- Planning Window: The projected peak in March 2027 leaves several months for heat action plans in states.
- Evidence for Policy: Quantified figures can support funding for cooling shelters, health systems and worker protection.
Negative/Cons/Demerits
- Model Uncertainty: The report gives projections of additional deaths, not counts, and the numbers have changed sharply between two reports, which shows large uncertainty.
- No Baseline: The article gives no baseline for total annual heat deaths, so the full scale cannot be judged.
- Health System Strain: Heat in March, before the usual summer, could catch health systems and workers unprepared.
- Unequal Impact: Outdoor workers, the elderly and the poor face higher risk, and the report does not give local detail beyond a state-level tracker.
Key Initiatives
- Climate Impact Lab Tracker: The lab launched the El Nino Heat Mortality Tracker, which gives monthly projections up to six months ahead and estimates of deaths since June 2026, with state and provincial data.
- Copernicus Monitoring: C3S reported August 2026 as the warmest August and September 2026 as the second warmest September on record.
- Paris Agreement: The agreement sets a goal of limiting warming to 1.5 degrees Celsius above pre-industrial levels, the benchmark exceeded in two consecutive months.
- India's Heat Action Plans: States prepare heat action plans under guidance from the National Disaster Management Authority, as part of heat preparedness.
The report calls for decision-makers to use the projections to prepare. It does not describe any Indian Government response to the new estimate. Heat action plans and health preparedness are managed by states and the National Disaster Management Authority.
Director's Perspective
Way Forward
- Update state and city heat action plans before February 2027, since the projected peak is in March.
- Set up cooling centres, water points and shaded work rules for outdoor workers.
- Train health workers on heat illness and keep hospitals ready for surges.
- Use state-level tracker data to focus support on high-risk districts.
- Report heat deaths properly so that policy can be evaluated.
The projection of about 55,000 additional heat deaths in India is a warning from a research group and not an official forecast, but it fits with record global temperatures and a strong El Nino. The wide change from 15,800 to 55,000 shows uncertainty, and the call to act early is the useful part. In a Mains answer, link El Nino to heat and rainfall risk, explain heat action plans and stress adaptation for vulnerable workers.
GS Relevance
Frequently Asked Questions
What did the Climate Impact Lab project for India?
The Climate Impact Lab at the University of Chicago projects about 55,000 additional heat-related deaths in India between October 2026 and March 2027, mostly in March, because of a super El Nino. This is higher than the 15,800 in its September report, which covered September 2026 to February 2027.
Why did the projection rise?
The new projection includes March and uses observed August and September temperatures, which were warmer than forecast. Copernicus reported August 2026 as the warmest August on record and September 2026 as the second warmest September, with two consecutive months above 1.5 degrees Celsius over pre-industrial levels.
What is the El Nino Heat Mortality Tracker?
It is a tool launched by the Climate Impact Lab that gives monthly projections of additional heat deaths up to six months ahead, along with estimates of deaths since June 2026, at state and provincial level. It is meant to help policymakers, funders and humanitarian groups identify high-risk areas.
How does El Nino affect India?
El Nino warms the central and eastern Pacific Ocean and changes global weather. For India it can bring higher temperatures and weaker rainfall in some seasons, which raises risks of heat stress and crop stress, so states prepare heat action plans in advance.
PYQ Practice — Statement Analysis
1 El Nino is a warming of surface waters in the central and eastern Pacific Ocean.
It changes weather patterns, including heat and rainfall, in many regions.
2 The Paris Agreement aims to limit global warming to 1.5 degrees Celsius above pre-industrial levels.
Global monthly temperatures exceeded this level for two consecutive months in 2026, according to Copernicus.
3 The Climate Impact Lab is an agency of the Government of India.
It is a research group linked to the University of Chicago, and its numbers are projections and not official forecasts.