NOAA officially declared El Nino in June 2026, confirming warmer-than-normal Pacific Ocean temperatures.
The declaration came after months of satellite data tracking warm Kelvin waves moving east across the Pacific.
What El Nino Declared in 2026 Means for the Pacific
El Nino is a climate pattern defined by abnormally warm surface waters in the central and eastern Pacific Ocean.
It occurs every few years and disrupts normal weather patterns across the globe for months at a time.
NOAA declared El Nino on June 11, 2026, after sea surface temperatures exceeded the threshold for the event.
Temperatures in the monitored Pacific region were at least 0.5 degrees Celsius above the long-term average.
Experts at NOAA official climate science portal say this El Nino is still strengthening and could intensify through late 2026.
How NASA Satellites Detected the Pacific Ocean Warming
NASA’s Sentinel-6 Michael Freilich satellite detected the warm Kelvin waves moving east across the Pacific.
Kelvin waves are underwater pulses of warm water that travel eastward along the equator below the ocean surface.
When they reach the eastern Pacific, they push up warm water that raises sea surface temperatures measurably.
The NASA Earth science monitoring site has been publishing satellite data showing the full progression of the warming event.
Scientists use radar altimeters on satellites to measure the height of the ocean surface with great precision.
Warmer water expands slightly, raising sea levels in affected zones and making the event detectable from orbit.
What El Nino Means for Global Weather Patterns
El Nino typically brings drier conditions to Australia, Southeast Asia, and parts of southern Africa.
Meanwhile, wetter conditions and heavier rainfall often hit South America, the southern United States, and East Africa.
The 2026 event is expected to influence hurricane activity in the Atlantic and typhoon season in the Pacific.
El Nino years also tend to be warmer globally, which can push annual temperature records to new highs.
Droughts linked to El Nino have caused crop failures in the past, raising food security concerns worldwide.
Warmer Pacific water shifts rainfall patterns and can trigger droughts, floods, and wildfires across entire regions.
Global average temperatures often hit new records during El Nino years due to the added ocean heat released.
How Long Will the 2026 El Nino Event Last
NOAA forecasters expect the 2026 El Nino to peak in strength during the northern hemisphere’s winter months.
Most El Nino events last between 9 and 12 months, though some have extended for 18 months or longer.
Scientists will continue monitoring Pacific sea surface temperatures through the end of the year for updates.
AI tools are now being used to track and model climate data faster than traditional weather center approaches.
Read how how AI tools track real-time data can help researchers monitor live environmental updates and climate news efficiently.
Content creators covering El Nino science should also see using AI for science and research writing for research-backed writing tips.
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