Recent NOAA Climate Prediction Center data show the 2026–27 El Niño already at very strong levels, with weekly Niño 3.4 anomalies reaching +3.3°C and the relative oceanic Niño index at +1.7°C for July–September, supported by subsurface warming exceeding +10°C in the eastern Pacific. Official outlooks assign over 83% probability of strong-to-very strong conditions persisting through January–March 2027 and 83% odds for October–December that the three-month RONI exceeds the +2.5°C historic threshold seen only in 1982–83, 1997–98, and 2015–16. This rapid intensification, driven by coupled ocean-atmosphere feedbacks and record equatorial heat content, underpins the 97.2% market-implied probability of a Super El Niño this winter. While model consensus remains robust, modest forecast spread around peak timing or exact index values could still influence final classification.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedView resolved

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