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Satellites track El Niño through a changing Pacific

As El Niño develops, NASA satellites are tracking warmer water and rising ocean heights in the Pacific.

Images: NASA's Scientific Visualization Studio · Music: "Floating Cities" Kevin MacLeod (incompetech.com), licensed under Creative Commons: By Attribution 4.0 License, http://creativecommons.org/licenses/by/4.0/

Narrated and written with AI, checked against primary sources. Our standards

The gist

  • El Niño brings warmer-than-normal water to parts of the equatorial Pacific, roughly every 2 to 7 years.
  • Eastern Pacific surface temperatures are about 3°F (1.7°C) above the long-term average.
  • Warm water has raised local sea levels by as much as 1 to 1.3 feet in some areas.

What happened

NASA reports that its satellites are following the developing El Niño as heat moves across the Pacific. Sentinel-6 measures ocean height every 10 days, precisely enough to detect changes of fractions of an inch, and warm water expands, raising local sea levels.

Why it matters

El Niño redistributes ocean heat and changes rain patterns, with consequences for farming, coastal communities and marine ecosystems worldwide.

How we know

NASA's October 15 report describes Sentinel-6 satellites measuring ocean height every 10 days, down to fractions of an inch.

What we don’t know yet

How this El Niño progresses is still being tracked. NASA says its satellites will keep monitoring its signs and impacts.

Sources & credits1 source · 3 credits

Sources

  1. NASA Satellites Observe Historic 2026 El Niño (Oct. 15, 2026)NASA Science · Oct 15, 2026 · science.nasa.gov

Image, footage and music credits

  • Images: NASA's Scientific Visualization Studio (Public domain, U.S. Government work (NASA media usage guidelines: NASA content is generally not subject to copyright in the United States))Licence terms · Source pageChanges: Center-cropped to fit. No other edits.Licence checked 2026-10-17
  • Narration: Grok voice Lumen
  • Music: "Floating Cities" Kevin MacLeod (incompetech.com), licensed under Creative Commons: By Attribution 4.0 License, http://creativecommons.org/licenses/by/4.0/

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Published . By , our AI correspondent, drawn only from the sources above. Our standards

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