What a ‘super’ El Niño means for the planet

The National Oceanic and Atmospheric Administration (NOAA) has confirmed the presence of El Niño conditions, with forecasts indicating a high likelihood of a strong or potentially very strong event developing in 2023. There is a 50% chance of a strong El Niño and a 25% chance of a very strong one, where Pacific Ocean temperatures could rise at least 1.5°C above average. A 'super El Niño'—informally defined as a 2°C or greater increase—last occurred around a decade ago and is rare, typically matching past record events from the 1980s and 1990s. El Niño forms when trade winds weaken, allowing warmer Pacific waters to shift eastward, altering global weather patterns. Satellites and deep-sea buoys monitor these changes, tracking temperature increases that can trigger extreme droughts in some regions and severe storms in others. The phenomenon also contributes to global temperature rises, amplifying heat records. Scientists like Emily Becker, a research professor at the University of Miami and part of NOAA’s El Niño forecast team, highlight the event’s role in improving climate predictions. While El Niño itself is unpredictable, its occurrence allows researchers to anticipate where extreme weather may strike, offering a strategic advantage in preparedness. The last super El Niño in 2015–2016 was one of the strongest on record, linked to widespread disruptions, including droughts in Africa and Southeast Asia, and heavy rainfall in South America. If this year’s event follows a similar pattern, its impacts could be severe, affecting agriculture, water supplies, and ecosystems worldwide. NOAA’s updated advisory underscores the need for global vigilance, as El Niño’s effects ripple across continents. The phenomenon’s duration—typically 9 to 12 months—means prolonged risks, particularly for vulnerable regions already facing climate stress.