El Niño under way and threatens weather extremes, scientists say
Summary
US scientists have announced that El Niño has officially started, with ocean temperatures rising in the tropical Pacific. This weather pattern may become very strong, causing hotter global temperatures and disruptions to weather, food, and economies through 2027.Key Facts
- El Niño is a natural weather pattern in the Pacific Ocean that raises global temperatures.
- NOAA declared El Niño conditions began as sea surface temperatures rose sharply in the tropical Pacific.
- There is a 63% chance El Niño will be very strong between November and January, one of the strongest since 1950.
- Past strong El Niño events occurred in 1982/83, 1997/98, and 2015/16.
- Some models predict ocean temperatures could be 3°C above average by the end of the year.
- El Niño adds about 0.2°C to global temperatures by releasing ocean heat into the air.
- This event comes on top of human-caused warming, increasing the risk of record hot years, especially in 2027.
- El Niño may disrupt weather patterns, impact food supplies, and affect economies worldwide.
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