As the phenomenon of El Niño develops in the tropical Pacific, attention centers on a specific area known as Niño3.4. This region is crucial for monitoring sea surface temperature averages over a three-month period. Meteorologists classify a strong El Niño event, or ‘super El Niño’, when the temperature exceeds 1.5°C above the long-term average.
Forecasts Indicate Record Global Temperatures
Recent predictions from leading meteorological organizations, including the European Centre for Medium-Range Weather Forecasts (ECMWF), the National Oceanic and Atmospheric Administration (NOAA), and Australia’s Bureau of Meteorology (BoM), suggest a significant temperature increase. According to the ECMWF, more than half of the models indicate a potential rise of over 2.5°C by autumn. Such an occurrence would qualify as a “historically strong event,” warned forecaster Johnson.
Potential for an Extremely Strong El Niño
- BoM forecasts also align with this outlook, indicating the development of a very strong El Niño later this year.
- Some predictions estimate that the temperature rise could surpass 3°C, which would break the current historical peak of 2.7°C recorded in 1877.
The 1877 event was characterized by limited observational data. As a result, the reported temperatures might not fully capture the event’s true impact. Notably, that El Niño lasted approximately 18 months and triggered catastrophic consequences worldwide. It caused severe drought and famine in Asia, Brazil, and Africa, resulting in millions of deaths. In contrast, some regions, like Peru, experienced devastating floods.
Comparison to Recent El Niño Events
The last recorded ‘very strong’ El Niño occurred during 2015-2016, where the average Niño3.4 temperature increase reached 2.4°C, highlighting the potential for future record-breaking temperatures as current forecasts evolve.
