In June 2026, Pacific Ocean sea surface temperatures around the equator were already abnormally warm, signaling a developing El Niño. Since that time, temperatures have only continued to rise. Federal forecasters note that the planet could experience its strongest El Niño event on record, frequently dubbed a Super El Niño or Godzilla El Niño. This natural climate pattern has far-reaching consequences across the globe, potentially affecting hundreds of millions of people. El Niño occurs every two to seven years when a vast body of water in the eastern tropical Pacific warms up and releases massive amounts of heat into the atmosphere, shifting global weather patterns. Daniel Vimont, a professor of atmospheric and oceanic sciences at the University of Wisconsin-Madison, compares El Niño to dropping an enormous rock into the Earth system, creating waves whose effects are felt worldwide. Technically, NOAA forecasters categorize this year’s climate pattern as very strong, which is measured by ocean temperatures in a specific region off South America. When that water exceeds 2 degrees Celsius above average, it qualifies as very strong. Previous strong events occurred in 2015-16, 1997-98, and 1982-83. Typically peaking in November and December, this El Niño is already the strongest ever measured for this time of year and is expected to last through early 2027. The added atmospheric heat raises global temperatures, meaning El Niño years tend to be record-breakers. While this year will come close, temperature records are very likely to fall in 2027, amplified by long-term climate change and fossil fuel emissions. El Niño also shifts global rainfall patterns, triggering destructive floods in some areas and worsening droughts elsewhere. The United Nations World Food Programme estimates this event could push at least 49 million more people into acute food insecurity by the end of 2027. Regionally, the southern United States tends to see intense rainfall from a shifted jet stream, raising flood risks while simultaneously alleviating droughts in the Southwest. Conversely, the northern half of the country experiences warmer and drier conditions. Atlantic hurricanes may become less frequent due to hostile formation conditions, while Pacific hurricanes grow more frequent and intense from warmer waters. Climate experts emphasize that while El Niño loads the dice for specific weather responses, natural fluctuations and human-caused climate change will also play significant roles this winter.
Source: npr.org
