Super El Niño Warning Issued

Scientists are forecasting the potential development of a ‘super El Niño’ event as early as May or June. This phenomenon is expected to significantly elevate global temperatures to unprecedented levels and trigger extreme weather patterns across the globe.

Understanding El Niño

El Niño is a natural climate pattern, part of the El Niño-Southern Oscillation, characterized by sustained warming of the Pacific Ocean’s surface waters. When this warming exceeds 2 degrees Celsius (3.6 degrees Fahrenheit), it’s often termed a ‘super El Niño,’ although this isn't a formal scientific designation.

WMO and Current Conditions

The World Meteorological Organization (WMO) indicates a high probability of strong or super El Niño conditions emerging as early as May or June. Current data shows sea surface temperatures in the tropical Pacific are increasing at a rate faster than any observed this century, suggesting a powerful El Niño is forming.

The El Niño-Southern Oscillation Cycle

The El Niño-Southern Oscillation cycles between warm El Niño and cool La Niña phases every two to seven years. During El Niño, accumulated warm waters in the Pacific spread, raising the Earth’s average surface temperature and releasing heat into the atmosphere.

Forecasts and Predictions

Despite the ‘spring predictability barrier’ making long-range forecasts challenging, experts are confident a strong El Niño is imminent. The UK’s Met Office forecasts a significant shift in the tropical Pacific, with sea surface temperatures potentially reaching 1.5 degrees Celsius (2.7 degrees Fahrenheit) above average.

NOAA and Potential Strength

The American National Oceanic and Atmospheric Administration (NOAA) estimates a one in four chance of a ‘very strong’ El Niño, with temperature anomalies exceeding 2 degrees Celsius (3.6 degrees Fahrenheit). Atmospheric scientist Professor Paul Roundy suggests a “real potential for the strongest El Niño event in 140 years.”

Climate Change Connection

While El Niño itself isn’t caused by climate change, scientists are investigating whether the greenhouse effect intensifies El Niño. A strong El Niño adds extra heat to the atmosphere, exacerbating the effects of climate change. The year 2024 is believed to have been the hottest on record due to this combined effect.

Potential Impacts and Regional Variations

The impacts of El Niño are not uniform. Europe and South America are expected to experience significant temperature increases, while Southern North America may face colder weather and flooding. The possibility of exceeding a 2-degree Celsius warming threshold is a serious concern.

Record-Breaking Temperatures Expected

With a super El Niño on the horizon, both this year and next are likely to be record-breaking. The UK’s warmest years on record demonstrate a clear warming trend, with 2025 currently tied with 2023 as the second-warmest year on record.