By Haley Kim
A powerful, ancient climate pattern developing in the Pacific Ocean is attracting attention from scientists and governments around the world. El Niño—a natural climate phenomenon that warms parts of the Pacific Ocean— is strengthening and predicted to reach its peak later this year. Scientists are warning that the event could influence temperatures, rainfall, and extreme weather in many parts of the world through 2027.
The current event is developing with unusual strength. NOAA reported in September that there was more than a 90% chance that El Niño would become very strong during the Northern Hemisphere fall and winter seasons. The WMO’s (World Meteorological Organization) latest update describes the region of the Pacific already warming substantially, with temperatures rising 2.5 degrees Celsius above average in August. This abnormally warm water can release large amounts of water and energy into the atmosphere, influencing weather patterns across the globe.
The WMO is warning of increased risks of flooding, drought, and extreme heat in various regions, particularly areas near the coast, such as California. The state is preparing for the possibility of heavy rain and landslides in the coming winter.
It is important to emphasize that El Niño and global warming are not the same thing. El Niño is a natural climate cycle; global warming refers to Earth warming driven by human activities such as burning fossil fuels.
As El Niño continues to strengthen, scientists around the world will closely monitor its effects on the weather and the affected communities. With the planet already facing a warmer climate, understanding El Niño and preparing for its potential effects will be essential in the months ahead. As this climate cycle develops, its impact can be felt not only in the Pacific Ocean, but potentially by people around the world.