Super El Nino threat unseen since 1950 shaping up, says Australian Met body

Forecasts from the Australian Bureau of Meteorology and Copernicus Climate Change Service (C3S) indicate that a strong to very strong El Niño event is develo...

What Happened

Forecasts from the Australian Bureau of Meteorology and Copernicus Climate Change Service (C3S) indicate that a strong to very strong El Niño event is developing in 2026, with some models projecting it could peak at levels among the highest observed since 1950.
The Niño 3.4 index value (the standard metric for measuring El Niño intensity) stood at +1.24°C as of late June 2026, well above the El Niño threshold of +0.80°C — all major models agree on continued warming through the second half of 2026.
Global average sea surface temperatures reached 21.0°C on June 21, 2026, according to Copernicus measurements — beating previous records set in 2023 (20.83°C) and 2024 (20.86°C).
A "Super El Niño" is defined as an event where sea surface temperatures in the Niño 3.4 region reach 2.0°C or more above average; the last confirmed super El Niño occurred in 2015–16.
In the last seven decades, only three "very strong" El Niño events have been recorded: 1982–83, 1997–98, and 2015–16; if the 2026 event reaches the same threshold, it would be a historically rare occurrence.

Static Topic Bridges

El Niño and ENSO (El Niño–Southern Oscillation)

El Niño is the warm phase of the El Niño–Southern Oscillation (ENSO) cycle — a coupled oceanic-atmospheric phenomenon centred on the tropical Pacific Ocean. During El Niño, trade winds weaken, allowing warm surface water from the western Pacific to slosh eastward towards South America, raising sea surface temperatures (SSTs) in the central and eastern equatorial Pacific. The atmospheric counterpart, the Southern Oscillation, refers to the seesaw of atmospheric pressure between the eastern Pacific (high pressure normally) and the western Pacific/Indian Ocean (low pressure normally). Together they form ENSO, one of Earth's most powerful drivers of inter-annual climate variability.

The Niño 3.4 region (5°N–5°S, 120°W–170°W) is the standard area used to measure SST anomalies for ENSO classification.
El Niño threshold: +0.5°C SST anomaly sustained for 5 consecutive overlapping 3-month periods; "strong" events exceed +1.5°C; "very strong" or "super" events exceed +2.0°C.
El Niño events typically develop during boreal spring (April–June) and peak during boreal winter (November–January).
ENSO is monitored by institutions including NOAA (USA), Australia's Bureau of Meteorology (BoM), and the Copernicus Climate Change Service (EU).
The Southern Oscillation Index (SOI) measures sea-level pressure difference between Tahiti and Darwin; sustained negative SOI values indicate El Niño conditions.

Connection to this news: The developing 2026 event has already crossed the El Niño threshold and models project it could achieve "super" status — which would make it the first such event in over a decade, with global consequences for rainfall, agriculture, and extreme weather.

Walker Circulation and Its Disruption

Walker Circulation is a zonal (east-west) atmospheric convection cell over the equatorial Pacific Ocean, discovered and named after British meteorologist Sir Gilbert Walker in the early 20th century. Under normal (La Niña-like) conditions, warm SSTs in the western Pacific cause air to rise over the Maritime Continent (Indonesia, Philippines), travel eastward at altitude, descend over the cooler eastern Pacific (Peru/Ecuador coast), and return westward at surface level as trade winds. El Niño disrupts this circulation: weaker trade winds reduce upwelling of cold water off Peru, warm SSTs shift eastward, and the convective rising motion migrates with them — suppressing rainfall over South and Southeast Asia while enhancing it over the eastern Pacific.

Named after Sir Gilbert Walker, who was Director-General of Observatories in British India (1904–1924) and first systematically described the Southern Oscillation.
Disruption of Walker Circulation is the primary mechanism by which El Niño suppresses Indian monsoon rainfall.
A weakened Walker Circulation reduces cloud cover and convection over the Indian subcontinent, triggering deficient monsoon years.
Of 16 El Niño events since 1950, five led to extreme droughts in India.

Connection to this news: A super El Niño in 2026 would substantially weaken the Walker Circulation, directly threatening Indian monsoon performance and raising the risk of below-normal rainfall across the subcontinent.

Copernicus Climate Change Service (C3S) and Climate Monitoring

The Copernicus Climate Change Service (C3S) is the EU's operational climate monitoring programme, implemented by the European Centre for Medium-Range Weather Forecasts (ECMWF) on behalf of the European Commission. It provides authoritative data on global surface air temperatures, sea surface temperatures, sea-ice extent, and climate projections. The C3S monthly climate bulletins are widely used by governments, scientists, and media as benchmark references for global warming trends. Its sister service, the Copernicus Marine Service (CMEMS), tracks ocean heat content and sea-level rise.

C3S is part of the broader EU Space Programme (Copernicus) and operates the ERA5 global climate reanalysis dataset.
The service confirmed that global average SSTs hit a new record of 21.0°C on 21 June 2026, surpassing the previous records set in 2023 and 2024.
C3S Director Carlo Buontempo has warned the current trajectory represents potential "uncharted territory" for global climate systems.
Rising SSTs outside polar regions have been 0.35°C–0.73°C above the long-term average over the last three years.

Connection to this news: Copernicus data provides the scientific basis for the super El Niño forecast, with its SST measurements and model outputs confirming the unprecedented warming trajectory in the tropical Pacific.

Impact of El Niño on Indian Agriculture and Food Security

India's agriculture remains heavily monsoon-dependent, with over 50% of cultivated area being rain-fed. El Niño events disrupt the South-West Monsoon (June–September), which delivers approximately 75% of India's annual rainfall. A deficient monsoon directly reduces kharif (summer) crop output — particularly rice, pulses, oilseeds, and sugarcane — driving rural distress, food inflation, and fiscal stress on the government through higher procurement and subsidy burdens. The El Niño of 2002 caused a 19% deficit in monsoon rainfall; the 2009 event caused a 23% deficit, triggering the worst drought in nearly four decades.

India's South-West Monsoon (June–September) contributes ~75% of annual rainfall; kharif sowing depends critically on June–July rainfall.
IMD (India Meteorological Department) uses a Long Period Average (LPA) of 880.6 mm (1971–2020 baseline) as the benchmark.
"Deficient" monsoon = rainfall below 90% of LPA; "Drought year" typically defined as below 90% LPA over a large area.
Kharif crops at risk in El Niño years: paddy (rice), pulses, groundnut, cotton, soybean, sugarcane.
El Niño years 2002 and 2009 are frequently cited in UPSC context for severe agricultural impact.

Connection to this news: A 2026 super El Niño poses significant risk to the Indian South-West Monsoon, with downstream consequences for kharif crop output, food inflation, and rural economy.

Key Facts & Data

Current Niño 3.4 index: +1.24°C (as of late June 2026), above the El Niño threshold of +0.80°C
Super El Niño threshold: SST anomaly of ≥2.0°C in the Niño 3.4 region
Record global average sea surface temperature: 21.0°C (21 June 2026, Copernicus)
Previous SST records: 20.86°C (2024), 20.83°C (2023)
Historical very strong El Niño events: 1982–83, 1997–98, 2015–16
Last super El Niño: 2015–16
Of 16 El Niño events since 1950: 5 led to extreme droughts in India
Notable drought years linked to El Niño: 2002 (−19% monsoon deficit), 2009 (−23% monsoon deficit)
Australian Bureau of Meteorology El Niño declaration threshold: sustained SST anomaly >+0.8°C in Niño 3.4 region
C3S/ECMWF models: strongly agree El Niño conditions will persist through second half of 2026, with strong conditions likely from August–September 2026