A rapidly intensifying El Niño event is predicted to reach historic strength by fall 2026, according to the U.S. National Oceanic and Atmospheric Administration (NOAA). With an 81% likelihood of becoming "very strong"—the top classification level—this El Niño could rank among the most powerful since records began in 1950. Formed just a month ago, it has already reached moderate intensity, driven by record-high Pacific Ocean temperatures, which are further amplified by human-induced climate change. Scientists compare it to the destructive 1997-1998 El Niño, which led to significant global damage and economic losses.
The strongest impacts are expected in fall and winter, bringing wetter conditions to the southern U.S., warmer winters in the north, and a likely reduced Atlantic hurricane season. Global effects could include droughts in Indonesia and increased atmospheric warming from the ocean's heat release. Climate experts anticipate that the current El Niño could break global temperature records set in 2024, signaling a potential preview of a much warmer planet in the near future.
El Niño, a natural warming of the equatorial Pacific, alters weather patterns across the globe. The current event, which formed only last month, has already surpassed the weak stage and is now considered moderate, with no indications of slowing its strengthening. NOAA's forecast suggests a 63% chance of it becoming "very strong" by fall, potentially ranking among the largest El Niño events since 1950.
The previous El Niño (2023–2024) made 2024 the hottest year on record, breaching the 1.5°C (2.7°F) warming limit set by the Paris Agreement. The current event is expected to further raise global temperatures through 2027. Scientists also warn of wide-reaching consequences, including extreme weather, droughts, floods, forest fires, and increased food insecurity, especially amid existing global conflicts.
Researchers speculate that climate change may be accelerating the transition between climate phases, contributing to the rapid and intense development of this El Niño. The Copernicus Climate Change Service reported that April's sea surface temperatures were the second warmest on record (21°C), following 2024’s peak.
As the El Niño event continues to develop, scientists and policymakers are closely monitoring its progression to mitigate potential impacts on global weather patterns and prepare for the challenges it may pose.