NOAA Will Declare RONI Above +2.5 for 2026–27

NOAA will publish a RONI of +2.5°C or higher for one of the overlapping three‑month seasons ASO, SON, OND, NDJ, or DJF, pushing the 2026–27 El Niño into the very strong range. CPC forecasters who raised the probability of a very strong El Niño from 81% in July to 95% in August will point to the fir…