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El Nino forecast: UN warns of strongest event in decades through 2027

The World Meteorological Organization reports a near-100 percent likelihood that El Nino will continue through February 2027 and could reach the strongest intensity on record.

El Nino forecast: UN warns of strongest event in decades through 2027

The World Meteorological Organization reports a near-100 percent likelihood that El Nino will continue through February 2027 and could reach the strongest intensity on record. Forecasts indicate the event will peak late in 2026, with ocean heat likely to push global temperatures higher into 2027. This article examines the expected weather shifts, regional risks and preparation needs.

What is the current El Nino forecast?

The World Meteorological Organization states that El Nino conditions are already established and are expected to intensify to very strong levels by the end of 2026. Sea surface temperature anomalies in the central eastern Pacific have risen from an average of 1.5 degrees Celsius above normal between May and July to weekly values of 2.2 to 2.6 degrees Celsius in late July and mid-August.

How strong could this El Nino become?

WMO Secretary-General Celeste Saulo said the trajectory could exceed any event monitored in the past four decades. The agency classifies El Nino events as weak, moderate, strong or very strong. Current data point to the highest category. Subsurface ocean temperatures in some areas exceeded 8 degrees Celsius above average during July and early August.

What weather impacts are expected?

El Nino typically shifts rainfall patterns, producing drought in parts of the Amazon, Indonesia and Australia, while increasing flood risk in other regions. The WMO forecasts above-normal temperatures across almost all land areas for September through November, along with classic El Nino rainfall responses in the tropics. Monsoon disruptions in India and altered rainfall across the tropics are also anticipated.

How does El Nino interact with climate change?

El Nino is a natural cycle unrelated to human emissions. However, it adds to background warming from greenhouse gases. The 2023-24 event contributed to 2024 becoming the warmest year on record. WMO officials noted that ocean heat released into the atmosphere next year could break that record again.

Which sectors need to prepare?

The WMO has alerted disaster management agencies and climate-sensitive industries including agriculture, health, energy and water management. UN Secretary-General Antonio Guterres described the event as a potential massive blow to communities and economies worldwide.

Frequently asked questions

How long will this El Nino last?

Current forecasts indicate continuation through at least February 2027, with effects on global temperatures extending further into the year.

Is this the strongest El Nino ever recorded?

Officials say it could surpass previous events if the current strengthening trend holds, though final classification will occur after the peak.

Which regions face the greatest risks?

Drought is projected for the Amazon, Indonesia and Australia. Flood and heat risks are expected in multiple other areas depending on local rainfall shifts.

Does El Nino cause climate change?

No. El Nino is a recurring natural phenomenon, but it amplifies temperatures on a planet already warmed by human activities.

Key takeaways

  • WMO assigns nearly 100 percent probability that El Nino will persist through February 2027.
  • Sea surface temperatures have reached 2.2 to 2.6 degrees Celsius above average in recent weeks.
  • The event is expected to rank among the strongest on record if intensification continues.
  • Global temperature records from 2024 could be broken in 2025 due to lingering ocean heat.
  • Agriculture, water and health sectors have been placed on alert for extreme weather.