The Climate Event Linked to 50 Million Deaths Could Return in 2026

A powerful climate pattern could reshape weather conditions across the globe over the coming months, raising concerns about drought, extreme heat, crop failures, and rising food prices. Scientists are monitoring the possibility of an exceptionally strong El Niño that could rank among the most intense events recorded in modern history.

The warning carries a grim historical connection. Between 1876 and 1878, a powerful El Niño contributed to a global famine that killed an estimated 50 million people, devastating communities across India, China, Brazil, and other parts of the world. Although modern forecasting and emergency response systems have improved dramatically, researchers warn that severe climate conditions can still place millions of vulnerable people at risk.

The Forgotten Climate Disaster That Killed Millions

The global famine of 1876 to 1878 began with devastating rainfall failures that destroyed harvests and undermined food supplies across several continents. In southern India, weak monsoon seasons left agricultural communities struggling to grow enough food, while drought conditions spread into northern China and northeastern Brazil.

The resulting catastrophe became one of the deadliest environmental disasters in recorded history. A 2018 study published in the Journal of Climate examined how an extraordinary combination of climate patterns contributed to the widespread droughts and famines that killed tens of millions of people. Historical estimates place the global death toll at around 50 million, although the precise number remains uncertain.

India suffered catastrophic losses during the Great Famine of 1876 to 1878, with estimates ranging from approximately 12 million to nearly 30 million deaths. Northern China experienced the devastating Dingwu Famine, while Brazil’s prolonged drought forced starving families to abandon rural communities in search of food and assistance.

The crisis unfolded over several years, and the weather was only part of the explanation. Political decisions, economic inequality, damaged local food systems, and inadequate relief efforts left millions without the resources needed to survive. Scientists now understand that the powerful El Niño of 1877 to 1878 played a major role, alongside unusual conditions in the Indian Ocean and North Atlantic.

What Makes El Niño So Powerful?

El Niño is the warm phase of the El Niño-Southern Oscillation, a natural climate cycle involving changes in ocean temperatures and atmospheric circulation across the tropical Pacific. These changes can influence weather patterns far beyond the ocean itself, affecting rainfall, temperatures, and agricultural conditions across multiple continents.

Under normal conditions, trade winds push warm surface water toward the western Pacific, helping support rainfall across parts of Southeast Asia. Cooler water typically rises closer to the South American coast, contributing to the temperature differences that shape the region’s atmospheric circulation.

During El Niño, those trade winds weaken and warmer water spreads across the central and eastern tropical Pacific. The shift changes the movement of heat and moisture through the atmosphere, disrupting familiar rainfall patterns in several parts of the world.

Some regions experience reduced rainfall and increased drought risk, while others can face heavier precipitation and flooding. The precise effects depend on the strength and timing of the event, as well as regional weather systems and other ocean conditions.

El Niño typically occurs every two to seven years, but its intensity varies considerably. Many events pass without causing a global catastrophe, although exceptionally strong episodes can produce substantial economic losses and place considerable pressure on agriculture, water supplies, and infrastructure.

Why the 1870s El Niño Was So Destructive

The El Niño of the late 1870s was extraordinary because several climate conditions combined to create a prolonged period of dangerous weather. Some reconstructions suggest that Pacific sea surface temperatures rose more than 3 degrees Celsius above normal during the event, although estimates vary according to the methods researchers use.

The event also coincided with unusual conditions in other ocean basins, including the Indian Ocean and the North Atlantic. These interacting patterns helped produce persistent droughts across regions that depended heavily on seasonal rainfall for agriculture and survival.

A 2018 study in the Journal of Climate examined how the combination of these climate factors contributed to the global famine. The researchers found that the disaster could not be explained by El Niño alone, because other ocean conditions and the effects of preceding climate patterns also helped create the conditions for widespread crop failures.

The human consequences were devastating. In India, failed monsoons left farmers without reliable rainfall, while food shortages spread through rural communities. In northern China, repeated harvest failures left families facing starvation, and in Brazil, drought pushed desperate residents toward coastal cities in search of assistance.

The scale of the disaster also reflected the vulnerability of the societies affected. Many communities lacked reliable food reserves, effective transportation networks, or government relief systems capable of responding to widespread crop failures. Once harvests collapsed, families had few ways to replace the food they had lost.

The 2026-2027 Forecast Is Raising Fresh Concerns

Forecasts issued in 2026 have raised the possibility that the world could experience a strong or very strong El Niño extending into early 2027. The US National Oceanic and Atmospheric Administration’s Climate Prediction Center reported an increased likelihood of a powerful event developing, with forecasts pointing toward potentially significant changes in global weather patterns.

A May 14 forecast cited in the supplied reference estimated a 65% chance that the upcoming event would be classified as strong or very strong beginning in October. It also placed the probability of El Niño developing by July at 82%, indicating growing confidence that the Pacific was moving away from neutral conditions.

Atmospheric scientist Paul Roundy, a professor at the University at Albany, wrote on X on May 5 that confidence was shifting toward the possibility of the biggest El Niño event since the 1870s. His assessment reflected concern about the potential strength of the developing climate pattern, although forecasts can change as ocean and atmospheric conditions evolve.

A very strong El Niño is commonly associated with substantially warmer sea surface temperatures in the central and eastern tropical Pacific. Such warming can alter global atmospheric circulation, influencing the likelihood of drought, flooding, and extreme temperatures in different regions.

However, a forecast of a powerful El Niño does not mean another famine on the scale of the 1870s is inevitable. Modern agricultural monitoring, international food trade, weather forecasting, and emergency relief systems offer important advantages over those available 150 years ago, although access to those resources remains uneven.

India Could Face Significant Agricultural Risks

India is particularly exposed to changes in monsoon rainfall because large parts of its agricultural sector depend on seasonal precipitation. A shift in rainfall timing or distribution can affect planting decisions, crop development, reservoir levels, and rural incomes, especially when dry conditions coincide with high temperatures.

The historical famine offers a stark example of the consequences of prolonged rainfall failure. During the 1870s disaster, weak winter monsoons were followed by an exceptionally dry summer monsoon, leaving farmers in southern India with devastating crop losses and shrinking food supplies.

A strong El Niño can increase the risk of below-average monsoon rainfall in India, but its effects are not uniform across the country. Some regions may experience serious rainfall deficits, while others receive substantial rain or face flooding, depending on the broader atmospheric conditions.

Heat can add further pressure by increasing evaporation and drying soils more quickly. Farmers who depend on rainfall may struggle to maintain crop yields, while households can face higher food costs if harvests fall and supplies become tighter.

The outcome will depend on the actual monsoon pattern, regional water availability, and the ability of authorities to respond to emerging shortages. Seasonal forecasts provide valuable warning, but local conditions will determine which communities face the greatest challenges.

Food Prices Could Become a Major Humanitarian Problem

Crop failures can have consequences that extend well beyond the farms where they occur. When harvests shrink, food supplies tighten and prices may rise, placing particular pressure on households that already spend much of their income on essential groceries.

Liz Stephens, a professor of climate risk and resilience at the University of Reading, told the BBC that reduced crop yields caused by drought or flooding can drive prices higher. The resulting pressure can become especially severe for people living in poverty, who have fewer financial resources to absorb sudden increases in food costs.

A family does not need to face an absolute shortage of food to experience a serious food security crisis. Rising prices can force households to reduce meals, sell livestock or other assets, borrow money, or abandon spending on education and healthcare.

International trade can help compensate for local harvest losses, but its effectiveness depends on the availability of supplies and the ability of countries to purchase and transport food. If several agricultural regions experience poor harvests at the same time, competition for supplies could place additional pressure on prices.

These risks make food security a central concern as the El Niño forecast develops. Monitoring crop conditions, maintaining emergency reserves, and helping vulnerable households access food can reduce the likelihood that weather-related disruption develops into a wider humanitarian emergency.

Climate Change Adds Pressure to an Already Warmer World

El Niño is a natural climate phenomenon, and the devastating event of the 1870s occurred long before modern global warming reached its present scale. Today’s atmosphere and oceans are substantially warmer, creating additional challenges when natural climate variability coincides with extreme weather.

Higher temperatures can increase evaporation, worsen soil moisture losses, and place additional pressure on crops and freshwater supplies during dry periods. Heat can also increase demand for electricity and water, creating further difficulties for communities already experiencing drought.

The relationship between climate change and individual El Niño events is complex. Scientists distinguish the natural fluctuations associated with the El Niño-Southern Oscillation from the long-term warming caused primarily by human greenhouse gas emissions, while examining how these influences interact.

A strong El Niño can contribute to higher global temperatures because it changes how heat moves between the ocean and atmosphere. The 2023-2024 El Niño contributed to the warming conditions that helped make 2024 the hottest year on record at the time.

If the developing event becomes exceptionally strong, it could add further pressure to global temperatures during 2027. The extent of that influence will depend on the event’s actual intensity, duration, and interaction with other climate factors.

Why Millions of Deaths Were Not Caused by Drought Alone

One of the most important lessons from the nineteenth-century famine is that drought does not automatically produce mass starvation. The destruction of crops created the initial danger, but political and economic decisions determined how effectively affected communities could respond.

In British-controlled India, historians have criticized the government’s response to the growing food crisis, including its approach to famine relief and grain distribution. The supplied references describe how food exports continued while many people struggled to obtain sufficient supplies, and how relief for vulnerable populations remained inadequate.

In northern China, agricultural disruption and weakened local production systems made it harder for rural communities to withstand successive harvest failures. Relief efforts also struggled to reach some of the areas most severely affected by drought and starvation.

Brazil faced its own difficulties as drought-stricken families moved toward coastal cities in search of assistance. Crowded and unsanitary conditions in some relief settings contributed to the spread of disease, adding to the suffering caused by food shortages.

These experiences show how poverty and weak emergency systems can transform a climate hazard into a humanitarian disaster. When people cannot afford food, access clean water, or reach reliable assistance, even a temporary disruption can have devastating consequences.

How Governments Can Reduce the Risk Today

Modern forecasting gives governments and humanitarian organizations more time to prepare for severe weather than their nineteenth-century counterparts had. The challenge is turning that information into practical support before harvests fail and food prices rise.

Several measures can help reduce the human cost of a strong El Niño:

• Improve early-warning systems: Reliable seasonal forecasts can help farmers and authorities prepare for potential rainfall shortages, heatwaves, and floods.
• Maintain emergency food reserves: Governments can protect essential grain supplies and improve distribution systems before shortages become severe.
• Support vulnerable farmers: Access to weather information, suitable crop varieties, irrigation, and financial assistance can help farming communities withstand difficult seasons.
• Strengthen emergency relief: Rapid food assistance, clean water supplies, and functioning healthcare services can reduce the impact of drought and displacement.
• Monitor food prices: Tracking sudden increases can help authorities identify vulnerable communities before households lose access to essential nutrition.

These measures cannot stop El Niño from altering global weather patterns, but they can reduce the likelihood that crop losses develop into widespread hunger. Their effectiveness depends on early action, adequate funding, and a willingness to prioritize people who have the fewest resources to protect themselves.

The Forecast Is a Warning, Not a Prediction of Famine

The global famine of 1876 to 1878 remains a devastating example of what can happen when extreme climate conditions collide with fragile food systems and inadequate government responses. Around 50 million people are estimated to have died during the crisis, but the disaster was shaped by human decisions as well as the weather.

The developing El Niño could bring serious challenges to agriculture, water supplies, and public health, particularly in regions already struggling with poverty or environmental stress. Yet the outcome will depend on the event’s actual strength and the preparations made by governments, farmers, and humanitarian organizations.

The most important difference between the 1870s and today is the opportunity to act before the worst consequences arrive. Forecasts provide advance warning, and food reserves, emergency assistance, and stronger agricultural systems can help protect vulnerable communities when conditions deteriorate.