A rapidly intensifying El Niño is raising the stakes for the next two years
A new forecast highlighted by Berkeley Earth suggests the El Niño now developing in the tropical Pacific may become the strongest event seen in roughly 150 years of observations. According to the analysis cited in the source report, 90% of simulations from 14 forecast models project sea surface temperature anomalies in the tropical Pacific that would exceed anything measured in the modern record.
The forecast points to a peak anomaly of 3.6 degrees Celsius above average, well above the previous record of 2.75 degrees Celsius during the 2015-16 El Niño. If that projection holds, this would not be a marginal record. It would be an outlier, surpassing the previous high by a striking amount and signaling an unusually powerful disturbance in one of the planet’s most important climate systems.
That matters because El Niño is not just an ocean pattern. It is a global climate amplifier. When easterly winds weaken in the tropics, warm water that has been piled into the western Pacific shifts eastward. Rainfall patterns follow that warmth, the winds weaken further, and a self-reinforcing feedback loop develops. The result is a pulse of extra heat layered on top of long-term global warming, with consequences that can ripple across rainfall, drought, storms, agriculture, and heat extremes around the world.
Why scientists are paying attention to the pace of change
The scale of the forecast is only part of the concern. The speed of the current event is another. The source report says sea surface temperatures in the central-eastern Pacific have already reached 2.1 degrees Celsius above average. That is far ahead of the 1.6 degree increase seen at the same point in the year during the 1997-98 El Niño, which had been the benchmark for especially rapid development.
In practical terms, the event appears to have reached very strong, or “super” El Niño, territory unusually quickly. Because El Niño events typically peak later in the year, the present pace implies the atmosphere and ocean system may still have room to intensify further before reaching a maximum in late autumn or winter.
The Berkeley Earth analysis described this start as an “explosive onset.” That description is important because strong El Niño events do not simply add warmth evenly. They can reshape weather patterns in ways that are difficult for societies and infrastructure to absorb. Some regions can see heavier rain and flooding, while others can shift toward drought and wildfire risk. The source text specifically notes links to extreme rainfall in South Asia, underscoring how quickly regional hazards can become acute once Pacific conditions reach these levels.
A short-term shock on top of long-term warming
The underlying climate context makes this forecast especially consequential. The source report states that El Niño adds a burst of heat on top of approximately 1.4 degrees Celsius of global warming already in the system. That means the event is not acting on a stable background climate. It is intensifying a baseline that is already historically elevated.
Berkeley Earth expects global temperatures in 2027 to reach 1.7 degrees Celsius above the pre-industrial average, which would break the previous record set in 2024 at 1.5 degrees Celsius above that same benchmark. The report also says there is a possibility 2026 could challenge that record first because the current El Niño is ramping up so quickly.
Those figures matter well beyond annual league tables of hot years. They shape how governments, utilities, health systems, and agricultural planners think about near-term risk. A world pushed temporarily higher by a powerful El Niño faces more intense heat waves, more stress on water systems, and a greater likelihood that already vulnerable regions experience simultaneous climate shocks.
The report also indicates that the 20-year global temperature average is likely to exceed 1.5 degrees Celsius within about a year. That does not mean a single El Niño “causes” the long-term threshold crossing on its own. But it does show how natural variability can accelerate the timeline on which warming becomes visible in headline global metrics.
What this forecast does and does not say
The source material presents a strong forecast signal, but it remains a forecast rather than an observation of the final peak. Model guidance can tighten or shift as the season progresses. Even so, the weight of the projections described in the report is notable: this is not a scenario where only a few outlier simulations are calling for an extreme outcome. The median projection itself is reportedly above the old record by 0.8 degrees Celsius.
That distinction helps explain why the forecast has drawn attention. Scientists regularly work with uncertainty, but they do not often describe a climate projection as genuinely shocking. In this case, the central expectation is itself extraordinary, not merely the far edge of the distribution.
The report also does not attempt to resolve every regional consequence. El Niño’s impacts vary by geography, season, and interaction with other climate drivers. What it does establish is that the ocean-atmosphere setup now underway is unusually intense, unusually fast, and likely to influence global temperatures in the months ahead.
The broader implication
If the event unfolds as projected, this El Niño will become a reference point in climate science and policy discussions for years. It would illustrate how natural variability can magnify the effects of human-driven warming, not in the abstract but in the form of record temperatures and heightened weather risk within a very short window.
For researchers, the event is a test of forecasting skill and climate attribution. For policymakers, it is a stress test for systems expected to manage heat, water, crops, insurance losses, and disaster response. And for the broader public, it is a reminder that the climate system can move in jumps as well as trends.
The next few months will determine whether this forecasted “Godzilla” El Niño reaches the levels now being projected. But even before its peak, the signal coming from the Pacific is already strong enough to reshape expectations for the remainder of 2026 and for 2027.
This article is based on reporting by New Scientist. Read the original article.
Originally published on newscientist.com
