Strong sea surface temperature anomalies exceeding +3°C across the eastern equatorial Pacific, combined with substantial subsurface ocean heat content, have driven the current El Niño to exceptional intensity. NOAA’s Climate Prediction Center reports a greater than 90% chance of a very strong event—often termed super El Niño when Niño 3.4 anomalies surpass roughly +2.5°C on the Relative Oceanic Niño Index—through the Northern Hemisphere winter 2026-27, with a 75% probability of a historic peak during October–December. Multi-model ensembles, including all 22 IRI forecasts, show consistent strengthening into early winter before gradual weakening. While atmospheric coupling and recent observations underpin trader consensus near 97% for “Yes,” modest forecast spread in peak timing or exact index values could still influence precise classification if conditions evolve faster than projected.